Today 10 years ago I went to Poland to buy a Phone with pre installed #Firefox OS on. The Phone was a Alcatel One, so very shitty. Two years later I installed Firefox OS on my Nexus 5 instead.
It was a very good concept, but sadly rolled out on too shitty hardware so it never caught on.
I once had a very unique camera stolen. I expected the thief won't know what the fuck it is so it'll show up on a classified nearby; so I asked the local photography community to keep an eye out. A couple weeks later I was notified that that kind of camera is for sale in the town over. I went to look as a potential buyer with cops following me, and got it back.