Leatherman is in my pocket all the time.
Milwaukee V28 cordless set. I have nearly the entire set, and haven't needed corded tools since I got them. I suppose there are other cordless sets that would be OK, but this one has been fantastic for me. The only disappointment is that they didn't make an impact driver in v28(they do have an excellent impact wrench), so I have a V18 impact driver.
Good flashlight - streamlight, pelican, surefire or Fenix
good 1/4, 3/8 and 1/2 socket sets. I have a bunch of sets, but my favorite set is the SK green box sets.
headlamp. I use them all the time.
Oh and I forgot to mention my Jawhorse! - I have two of them now the Jawhorse and a knockoff from tractor supply. They both work great.