For me, it's a bidet toilet seat. I bought one that didn't really fit as well as I hoped, so now I am shopping for a v2 based on experience. I don't want to live without one going forward. That's for sure.
Agreed, although for me it’s the Leatherman Micra, small enough for keychain and has a chunky pair of scissors instead of pliers as the main tool. I find the standard scissors on most pen knives or multi tools are always secondary and often flimsy but the ones on the Micra are great.
And I seem to use scissors waaay more than a knife, much easier for cutting tags off things, cutting an opening in a bag of coffee, cutting string in two, cutting tape…