I like to be equipped for any eventuality.

I normally carry roughly one small handbag’s worth of stuff in pockets. Keys, money, penknife, phone (with full load of contacts and calendar), plastic cards, business cards, small notebook, pens, rubber (eraser to you!), name badge (surprisingly useful for getting into places!), handkerchief (cloth). Depending on the jacket, I might include a tie, alternate business cards, mints, maybe a USB stick.

The penknife includes blade, scissors, file, screwdrivers (flat and cross point), bottle opener, can opener, spike (otherwise known as the thing for getting stones out of horses hooves), tweezers and toothpick. Lots more stuff in the car: toolkit, office equipment, cables, camera, torch, spare parts, etc, etc.

Man is essentially a tool-using animal, and where would we be without our tools of trade?