Aside from the typical wrench, screwdriver, socket and ratchet sets;
It's been said, but pliers (snap ring, needle nose, channel locks, pipe wrenches small, large.. all the pliers), pullers (pickle fork, two arm, three arm, big, small... all the pullers), clamps (C clamps, vise grips, big, small) race install tool has been super nice to have, also finally bought a bearing packer after years of doing it by hand which has also been super nice to have, a good set of chisels and drifts, a brass drift has been nice to have on hand.
Ratcheting crimpers and auto strippers for wiring, small torch for heat shrink.
I'm on the fence on click style torque wrench (have a 1/2 and 3/8), kinda wish I had bought digital with a torque to yield function.
Digital caliper.
A good pick set.
Air hammer with an assortment of attachments is nice to have on hand.
I use my dremmel more than I probably should.
I use my small cordless 1/4" impact A LOT.
Abrasives (sandpaper, emery cloth, scotch brite) and solvents.