I've gotten by on some pretty basic stuff and filled in as needed.
Metric GearWrenches: Combination open-end/ratcheting box-end. Can't find the link to the set I bought, but they look like
this.
Assorted HF pliers. These are OK, but they're kind of cranky and don't work as smoothly as name-brand stuff.
Hand-me-down channel locks from my dad's tool box. The giant pair is perfect for squeezing pistons back into brake calipers.
Pep Boys 1/2" metric deep impact sockets.
Assorted screwdrivers. I've scavenged from my dad's toolbox and picked up a few at auto parts stores.
Trim popper. I bought one at HF but I don't think I've ever used it.
Good utility knife. I've got a sturdy all-metal one that holds extra blades and is easy to adjust and swap blades.
HF kitchen/utility scissors. Picked 'em up for $0.88/pair. I keep one in the tool box and one in the kitchen. Perfect for trimming hang-down bits off your belly pan...
Cobalt(?) 1/2" torque wrench from Lowes. At one point I heard these were made by Matco or Snap-On or something. That's probably BS, but I won't ever buy another Craftsman after mine literally exploded... and they wouldn't replace it.
Random Vise Grips.