Thingiverse user themauxfaux just posted these plans for a laser-cut bangle that incorporates a hollow passage, complete with air-holes, so you can display your favorite live insect specimens on your wrist.
He calls it "Putrefashion," which, although memorable, is pretty much a giant mistake, IMNSHO. I mean, I understand: I have a hard time resisting a good pun myself, but the whole point here is to keep the critter alive. And if you were to, you know, keep wearing it after it died and started to rot, well...just...ew. Even moreso "ew" than wearing bugs around on your wrist in the first place.