there's a pterodactyl flying around you!
it also glows in the dark, if it wasn't good enough :D
drill a hole.
use a drill tool or dremel. if you don't have either and have a lot of time and strength, it's possible to stick a tiny hole with a sewing needle (hold it with pliers) or something sharp.
if there's a thin area, use that (then add a jumpring, a chain and a hook!)