When I'm in front of the television I'll often flick open and closed my Benchmade mini grip using various opening methods. Drives the family crazy. With a little practice you can open that thing in almost any way imaginable. (thumb flick, middle finger flick, wrist, spydie-drop, reverse spydie, axis swing, and more )
Besides that, I recently bought my first zippo lighter. I don't smoke or anything, but as an avid outdoorsman I find it a great tool. And those things are damn near impossible to put down. You just want to hear that famous zippo "click".
From my cold, dead hands.