I'm very transient, myself, owing to the seasonal work I do. I don't really have a place I can call a permanent home, but I do have a room at my parents' house, where at least I can drop my stuff once a year. The two primary collections I just can't seem to kick are toys and books. The room at my folks' house has two entire walls lined with bookshelves, and it isn't enough. I need more shelves. It's like 90+% picture books of some sort -- art books, graphic novels, illustrated literature, TTRPGs, etc. I can't help myself. Looking at beautiful illustrative and cartoon art is my favorite thing in the entire world to do, and as far as luxuries goes, I feel like surrounding myself with lovely books is a pretty nice one.
As for the toys, along with interesting odds and ends, I used to collect action figures, but really did have to put a pause on that because I have no room to display any of them, and keeping them packed up is depressing. That desire has quickly been filled with collecting miniatures. Tabletop gaming minis are so inexpensive and easy to find these days. I'm kinda still not used to that, tbh. That's fun, and it's even inspired me to start making my own paper miniatures. The great thing about minis is they take up far less space to display and store!. To add to the challenge of the hunt, though, I'm really starting to get into keshi figures -- little Japanese molded erasers shaped like characters. My favorite are Kinnikumon Kinkeshi, imported to America when I was a kid as M.U.S.C.L.E. I mean, look at these guys, they're just so weird and fun!
I intend to get myself a big box of them for my birthday this year, and I'm totally stoked about it. Just like gaming minis have inspired me to make my own, these have inspired me to start drawing wacky characters. Maybe I'll turn them into trading cards or a zine or something. 80s and 90s kids' stuff had so many toys and things that were weird just for the sake of being weird. I miss that vibe.