I like the pressure gauge for when I get to a real pump then I can get up to MAX pressure.
I like the philips head on the swiss army knife. it also has scissors and tweezers, small regular head screwdriver etc. It also has one large blade for those grizzlies that aren't scared of my shear mass ...

Yeah, those needle nose locking pliers ... good for pulling cable and snapping chain back together. also good for weird little nuts like on my rack and DR, etc.
Dunno, I just did a quick strip down and grabbed what i thought I should have. I'm usually picked for a century regardless is it's a 13 mile commute or a 65 mile dinner time ride, oh and yeah the stray century ... I dream of riding with no rack and no rack trunk - but it's just a dream. :-)