I'm into a lot of different hobbies, so I end up building various collections all the time. As far as toys go, I mostly collect Hotwheels showcasing vintage Japanese cars. Otherwise, I also collect shoes, raw denim jeans, some Supreme stuff (I have nearly a full set of Supreme items to make both a day hike pack as well as a full-on overnight camping kit), and finally SNES games/accessories.
I'll have to come back in here when I can dig out my HW collection to post. I got side-tracked for a bit in life and missed a few good vintage Japanese releases, so I'm a little irked.