Share 'Must have tools and jigs'

Hey guys. Been a while. I'm looking for more tool/jig ideas. Specifically, I'm looking for those that you don't necessarily need, but make a common task so much easier that you can't imagine not having it now. What's at the top of your list? Got the stewmac vise. Haven't had it long, but.. wow. I recently made a neck removal jig. I've done plenty of resets without - just clamps and cork backed…