Muzzle.
Make a Halloween mask.
Decorate guard rifles.
Make really cool underwear.
Make a mummy costume for Halloween.
When you get in a really boring conversation pull it out and ask the other person if they can name 101 uses for it (plus or minus 70 or 80).
Attach underwater flashlight to underwater strobe for night dives.
Hold a car battery in.
Headbands.
Jewelry.