The main protein sources I cycle through are: beans (various), chickpeas, lentils (yellow for dal, brown for burgers), soy (tofu, tempeh), and wheat gluten sausages, or other store bought veggie dogs if I don't feel like cooking.

Then I'll just make whatever recipe that features those, which is basically infinite.

Having a weekly list helps a lot, even if I don't always follow it. So I can just glance at the list and know I should put, for example, some beans on soak for tomorrow.