If you’d rather not use keychains to carry your keys, check out Magnetikeys. Each of these unique keys has a pair of magnets so you can snap it to another Magnetikey. It comes with a hub that lets you rotate up to four keys. It will initially be released in KW1 and SC1 standards.
Etsy store 1Up Forge makes key holders using the controller connectors of old video game consoles, such as the NES, the Atari 2600 and the PlayStation. Attach the male connector to your keyring then stick it in the proper port to secure it. They could use more polish though.
Australian artist Moerkey creates sculptures using recycled keys, coins, and copper as his primary media. While the skull, bowl, and wine bottle designs are very cool, there’s something about the giant sphere of keys that catches our eye. His smallest spheres are nifty too.