Let me see, since this is Keychain as well as one piece (which I over looked) let me see what I have that qualifies as that.
Swiss Tech Utilikey
Swiss Tech Micro Tech
Swiss Tech Micro Plus
Sebertech T7 (had the T10 but just gave it to Gadget Guy, said he loves it
Leatherman Squirt S4
SOG Crosscut (TiNi)
Think that's it, does not include vic or wenger stuff. You guys got any cool stuff that's not one piece?