Don’t know how creative or handy you are, but you could make a shadow box, or other display, out of an old cigar box.
You can usually pick them up for free at a cigar store. Some of the really nice ones, they might charge you $5 for (there are some really cool ones out there). Cut a hole in the lid, and if you want, but a piece of glass or plexi in it. Couple of heavy magnets glued on the inside, mount it to the wall, and boom, shadow box display.
The image below is kind of what I’m talking about. I’d use a nicer, cedar box, and cut the hole larger, but you get the idea. Google cigar box/diy/crafts, etc. and you’ll find all sorts of ideas. I’ve made a display cases for pistols, jewelry boxes, and am currently working on a display box for my watches. Best thing is, as you want to display more, you can just pick up another box or two, and even if they don’t “match” they’ll look intentional in style.