The PicoPen is a small attatchable keychain pen. It features and ingenious system of a magnetized holder so the attached keychain and pen are together and available when you want them to be. It's a sweek pen system.
1st Place Winner in an independent review of Keychain Pens bu Al Medrano
"The PicoPen has a wonderfully
sleek design. It has the smallest
footprint (size and volume) among
those studied (except for the Swiss
Army Victorinox). The inventive
magnetic coupling concept makes
this a "one hand" operation for
detachment. Made of stainless
steel, it is rugged enough to take a
lot of punishment."