Spyderco dragonfly (I believe the plastic handle model is under 2oz): http://spyderco.com/forums/showthread.php?t=28690
Or if you really want a tiny one, Byrd Finch: http://cutleryscience.com/reviews/finch.html
Best of luck.
J
Kershaw Scallion
+1
I'm buying a new one next week, after my Leatherman...broke. I closed it as normal and the supporting node for the locking system just snapped off. I'm sending it back as its only 18months old and in perfect condition, but it seems clear that this is a design flaw- the file seemed to get caught or something and went out of place, putting pressure on the locking mechanism, forcing it up and ping. I'm now pretty disenchanted with the brand and was thinking of a Gerber Resolve or Wenger Evo 17 ST. Anyone have any experience of both Wenger & Victorinox? The Gerber looks the business but I possibly prefer the Wenger as its a bit less of a statement.