FreeKey, the press-to-open keyring...

I was just saying how much I love purely mechanical innovations, and along comes another one to make my day!  FreeKey one-ups the normal spiral metal keyring by simply adding a small bump in the metal.  The result is a pressable (yes!) spot on the ring that will flex it right open - no painful prying required.  Clever, functional, and I'd say ready for the market!
[via Gizmodo]