Last time I rode a horse it tried to kill me. It'd never seen anybody wearing a Santa suit before and I soon as climbed aboard it went straight up into the air. So rule out horses.
Race car driver? Roy, I'm married to the fastest little old lady on the planet. I don't call her Leadfoot Lynne for nothing. I'll never be in her class, so rule out Formula 1 for your old Uncle Didge.
Did you have an option for skateboarding?