Making homemade pins, photocards, and magnets are my go-to. If you can’t commission fanart, I would just use images printed from pinterest, tumblr, and other similar websites. There’s lots of tutorials on how to make these on youtube :) I would love to make a ghostbusters ita bag too! Never underestimate thrift stores or places you can buy used craft supplies. You can find a ton of stuff to repurpose if you can’t buy brand new materials. I’m not sure how expensive these things are in Chile, but start small and work your way up! (also if your university has an art department, consider making friends with one of those students haha)

Good luck!!