Got a bidet as a joke gift for Christmas a few years ago, it has been an absolute game changer. Hate pooping anywhere but home now, I actually feel clean, and use much less toilet paper.

An oversized poncho cape from the local Goodwill. It was woven in different shades of blue and while I'd never wear it outside, I've used it as a wearable blanket at home for a few years now.

I found out it was actually hand made, and costs 300+ USD from the original shop. Bonus points, I feel like a wizard when I wear it

I needed a "lap desk" or something to put my laptop on, but I wanted it to be low-profile and I could only find a wooden cutting board. Now wooden cutting boards are the only thing I use as lap desks because most actual lap desks I find are super bulky.

Bug zapper flyswatter. Like you can buy at Harbor Freight for a few bucks. It might not be a terribly effective solution to the overall fly population, but in terms of grim-bloody-vengeance-per-dollar, it's one of the best investments I've ever made.

Here's an odd one my wife and I were just talking about. Some years ago, we were redoing our kitchen and the contractor told us to go buy the kitchen faucet we wanted. We went off, looked at several, and picked the one we thought looked the best with what we were doing.

When the contractor went to install it, he opened the box and a battery pack fell out. I couldn't for the life of me figure out why a faucet would need batteries. It turned out that you can turn it on and off by touching it anywhere (handle, faucet itself, whatever), you just leave the physical handle open and set where you want it, then you can touch on and off. I thought it was the dumbest thing ever and we'd never use it.

Flash Forward to now and it's one of the most used conveniences we've ever bought. All those times your hands are covered in raw meat or other cooking mess? Just touch the faucet with your elbow. Rinsing a bunch of veggies one at a time? Tap on, tap off. It works flawlessly, unlike those touchless ones at the airport: no delay and works every time. We will never have a kitchen sink without it - my wife wants them for the bathroom.

My wife bought me a Beard Bib as a joke gift after I found it online one day. It's basically a smaller version of the bibs you wear when getting your hair cut, but with suction cups attached to the bathroom mirror to hold it horizontal and catch stray hairs when using an electric shaver. It looks ridiculous.

I now use it every time I trim my beard, even if my wife still laughs at me every time she sees me in it. Cleaning up all the stray hairs was always a pain in the ass, but this thing does a surprisingly good job at catching 99% of the hair, and I can just brush it all into the trash when I'm done.

A 3D-Printer, I thought I just play around with it and get bored, but you discover so many things that you can do!

The handle on the fridge broke? Print new ones. Need a Flowerpot? Just print one. The router needs a wallmount? I have one ready in a few Hours.

Also I can watch it print for hours, very fascinating and calming.

A Raspberry Pi. I bought it out of a whim and now I use it as a portable desktop computer, I can use Alpine Linux with my files and my setup on virtually any system that doesn't whitelist MAC addresses.

Especially handy when your university has contracts with Microsoft so you aren't supposed to use competitive software, I feel like I'm breaking the law.

A burr grinder for coffee beans. I thought coffee snobs were full of shit. I was wrong.

Scooter. Not an electric one. I had a thought once "hey I did ride one in childhood, maybe it can be a bit of nostalgic fun from time to time". Got myself the cheapest Chinese thing I could find, "no point investing too much into a fad".

Turned out a scooter is absolute peak urban mobility. Short distances become much shorter. Mid-long distances become short. Granted, for a longer trip somehow the time gains diminish, probably because it's not as efficient as a bike. But a scooter isn't a long-hauler. It's there to zip through an empty mall. It's there to be folded up in a second and brought into a bus or a shop without being a hassle. It's like 3-4 kg, not too fast for sidewalks but fast enough for bike roads, extremely easy to stop, doubles as a cart when carrying bags of groceries home.

The chinese one broke after 1 season because I was riding it everywhere. Then I got myself one from a better company, I chose it for small weight and portability. It's technically children's thing but I'm well below weight tolerance and also smol so it's easy to handle. It's already like a 5th year and whenever it's not raining or too cold I ride it for shopping, errands, leisure walks, to work... Almost daily.

An ebike: I don't even really drive anymore most of the time and it beats the hell out of being stuck in traffic. Getting around is fun again.

I always enjoyed cycling and still ride my MTB, but for getting around town quickly, ebikes are hard to beat.

I got the glasses with 90 degree prisms in them so you can read while laying down. The person on the product page looked like an idiot and thought it would be funny, but I'm on my 3rd pair now

Custom-made ear plugs. Even if you only wear ear plugs occasionally (I do when in a noisy hotel, or when a neighbor goes a bit too crazy), they are so worth having.

Basically you go to an audiologist and they put something kinda liquid in each of your ears to take a mold of your ear canals. A couple of weeks later, you have plastic earplugs that have the exact shape of your inner ears.

Upsides: • They work, always. I would typically use wax or silicon disposable ear plugs before that, and sometimes in the middle of the night they might move and let the sound in; those don’t. Also, foam disposable ear plugs don’t stay in my ear, don’t ask me why. • They never hurt. Since disposable ear plugs get shoved into your inner ear until they take the shape, they continuously push against the walls of your ear canals. I would often feel kinda bruised after using them for a long time. • They are crazy comfortable. Put your ear on a pillow, and you barely feel them at all. • But do they block too much sound? That’s up to you. Basically, you choose the level of noise you want to keep out, which I believe is achieved by using different kinds of plastic.

They’re not a trivial purchase (I think mine cost $150), but then you use them for decades, so it’s definitely worth it. It was a stupid purchase in my case, because I bought them on a whim out of anger against my neighbor’s party one night; but they’ve followed me everywhere since!

Bed sheet suspenders. Dumb problem, stupidly cheap, horribly made, and ABSOLUTELY fixed the friggin sheets being yanked off the corner of the bed twice a night by my tumble-dry-medium sleeper of a spouse.

When they finally broke after almost 2 years I sewed some that'll last 10 years and I don't regret them at all.

Shower mirror. It has a base that suctions to the wall and a reservoir that you fill with hot water so that it doesn't fog. I had no idea how much better it was than shaving at the sink. If I'm in a hurry I'll sink shave but I love shower shaving and I love that mirror.

Edit: Here's the one I use. No major complaints, just remove the mirror between uses and re-suction every once in a while.

Maybe not stupid, but I purchased a pair of bone conducting headphones just because I thought they would be better for running, and harder for me to lose. I wasn't expecting much, but damn, they have been so much better than I expected. Even though the sound quality isn't quite as good, they work so much better with my sensory processing issues, and I can just leave them on all day without concern. Because I've got curly hair, people don't even know I'm wearing them, and because they don't go in my ear canal, they don't impact my ability to hear/talk/interact with the world around me.

I bought an Ember mug because I thought it was silly. I ended up really liking the temperature control. I don't rush my coffee/tea. Now every sip is as hot as the first one.

The new Ember costs, I think, half again as much as the first iteration. It's a cute gimmick but I certainly wouldn't pay what they're charging now.

Monitor mounting arms that connect to the back of the desk. I have 3 times as much room on my desk now. It's amazing how much room monitor stands really take up. It's not just the actual stand but really the surrounding area because you can't really set any large objects in the vicinity. It really is a game changer to gain a lot of desk space.

A while ago someone posted a picture on Reddit of an old cast iron rotary food grater/slicer and asked "what is this thing?". A bunch of people said it was for grating things like cheese or slicing vegetables. Some people posted the original French or Italian names of it, which was difficult to find. Someone said look up "Rotary grater" and they're all over Amazon for dirt cheap. I bought a cheap plastic one for like $20, figuring I'd use it a few times and forget about it.

I use the damn thing multiple times a week for grating blocks of cheese. It can grate a 1 pound block of cheese in like 30 seconds, 2-3 rotations usually gives me more than enough cheese for myself. It's so much easier to use than a box grater, and no possibility of destroying your finger tips or knuckles!

Small adhesive rubber bumpers or “feet” that came in a variety of sizes to put on the bottom of things. Was under $5 but has brought me some joy going around my home putting feet on anything that isn’t level or could scratch or makes noise. Something oddly satisfying about it.

An air fryer. It was a bit of an impulse buy and I didn’t think I would use it very much but as it turns out it’s much more versatile than I initially thought. I’m actually considering getting rid of my regular oven since I’ve rarely used it since I got my airfryer.

Wireless headphones. The original goal was working out and I didn't want to carry my cellphone on the hand. I never went to work out, but it turns out to be very convenient when my neighbors are being loud, since it has noise cancelling, and also for chores.

Also, some better clothes. For context, I'm FtM. My sister and mother are vain and buy chic clothes like every month, so I always had a surplus of hand-me-downs. I didn't want to buy more clothes because I already have perfectly serviceable unisex clothes on my closet, but when I donated out all my feminine-cut clothes and shoes I found myself lacking clothes so, yeah, I went and bought the stupid clothes. I fucking love them and wear them on every opportunity I get. They make me feel so much better :)

An impulse buy of a $20 micro wireless Bluetooth keyboard. Holy shit. Rock-solid design, ludicrously long battery life, excellent signal transmission, a replaceable battery with the option to use AAAs, a usable trackpad with sensitivity settings. I cannot stress enough how impressed I am with this device as an electrical engineer.

Now I can actually get real work/play done when I'm too depressed to get out of bed. It's also really useful for working with a Raspberry Pi. That plus a cheap LCD means I can just use it like an ordinary desktop.

If anyone is interested in this product, ask for a link and I'll post it in the comments.

A PVC pipe cap.

I was making a lightsaber for my kid, and bought a length of clear PVC from Home Depot. (I know, they have bad politics, but Lowe's didn't carry clear PVC.) My local store didn't have any clear PVC or clear accessories in stock, so I had to place an order for shipping, so I got a couple things "just in case" for the build. One of those was a pipe cap.

Didn't end up using the pipe cap, because lightsabers don't have that sort of end. It now sits at my desk as a teeny tiny trash can. Bits of thread from sewing, nail clippings, tags I clip off of shirts, a lot of things fit in the teeny tiny trash can. When it's full, I empty it into the trash, but for a rather small pipe cap, it holds quite a bit of small trash.

A long shoe horn.

I got it cause my formal shoes are a tight fight. It has been a game changer, it is a whole new experience wearing shoes, even the normal ones.

My wife got me a fitbit. I resisted a little bit because I didn't want to have yet another device to monitor, charge, and maintain etc. I've been really surprised and impressed and how effective it has been in subtly encouraging me to make some small improvements in my habits. Not a bad deal for $100.

I got a really girly looking beanie (I'm a guy) at a white elephant gift exchange and it became my favorite beanie. It got stolen and I'm sad that I can't find it again.