I don't want to have to use a different tool for my stem bolts, seat clamp, bottle bosses, top cap. Yes, there can be ... while I seem to go through M4 bolts like nobody's business.

The most noteworthy one is easily the mini motorized hair screw tool, which is a game changer ... fill the tank to the fill line with water, as well as a cap full of Bissell spot cleaner.