Also called the Split-Ring-Key, this refreshing, unexpected hybrid key-and-keyring can be brought to your local key cutter, who can craft it to fit any regular KW1 or SC1 keyholes. At just $3.50 each, this is one of those luxuries that won't break the bank.
Amron, who also brought us the black leather bandaids this past summer, has a number of cool and outside-the-box usable-art ideas on his website. We also love this wine stopper, which looks like a talon digging into your bottle. Very goth chic.