My first bike specific tool.
40 years ago (more or less) I bought a VAR cable cutter. It was the first bike specific tool that I ever bought but it had ceased making a very clean cut. Last night, while hanging out in the shop with my son, I took it down off of the pegboard and started fooling around with it. It has a provision for tightening the jaws and voila - it's making crisp, clean cuts again. I hung it back up on the active duty section of my tool board. VAR cable cutters rock!