Why not make a necklace with a fully functional can opener as a pendant? This can opener has been in the kitchen drawer for a very long time but recently I noticed its potential as a base for a resin pendant. I used an image of a retro gal on a swing with clouds in the background, ice resin, and added a few rhinestones to fancy it up. I mixed it up with a piece of a rosary with beads and charms I had in my stash.
Yes! It really does still open a beer quite effectively and it quite a hit at parties. Creating a piece of jewelry using a digital keychain breathalyzer would also be a hit at parties but much, much more challenging aesthetically.