I never cared much for multitools beyond a modest Swiss Army knife. That said, I usually have in my pockets (including at work, which is mostly in an office setting):
- Swiss Army Knife (camper model, which includes saw and corkscrew).
- Slip 'N' Snip folding scissors
- Combination #2 phillips & 3/16" straight blade screwdriver about 5" long
- Tape measure (most commonly 10' x 1/4")
- Flashlight (usually 3 AAA cell, 9 LEDs)
- Magnifying Glass (folding, about 2 1/4" diameter)
- Pill container with a microfiber cloth to clean glasses and magnifier
- comb
- car keys
- House/office/church/workshop keyring, which also has a 5/32" allen key from a muliti-tool which I use to secure crash bars at church and school (and occasionally tweak robots)
- wallet
That's my primary morning checklist - cell phone is optional. I have added other things from time to time, but keep coming back to this basic list. The slip 'n' snips were the latest addition that stuck, about 3 years ago now.
I have pliers, multimeters, and other tools stashed in my briefcase, car, desk, and of course the garage at home.