Loading a vehicle or container for moving. I've had friends ask me to basically take over their move. And yeah, I may be a sucker for doing it, but I will save people hours and multiple trips while moving. I 3d tetris the hell out of a uhaul.
Height. I'm 6'6" on a good day. Top 99.897% in the world.
Reviving and programming REMBASS units. REmotely Monitored Battlefield Sensor System was a old ass piece of equipment when I was using it 20 years ago in the Army. You'd have to program different channels using another old ass piece of equipment. And very often they'd drop their fills, or not appreciate having a new, fully charged battery in it. It would frustrate people to no end because they'd spend hours trying to get it going, and then I'd stroll up talking all nice and pretty to the gear and shit would just work for me.