When I go to the store, I bring a cart or two inside. Then, I return my cart to the store unless the corral is right next to me.
Keeping my ear hairs plucked. You youngsters will appreciate this at some point as you grow older. I observe weird people all of the time who have a jungle growing out of their ears. PULL THOSE HAIRS!
My lawn is not weird/meaningless, so I won't mention that here.
When walking, I can imagine where I am walking to or you can point to spot on the trip and I can get to within a step or two of telling you how many steps it is going to take to get there. Seriously, I have estimated 247 steps before and been over by 1 step. (Just trying to point out this isn't like, "I can guess 8 steps and it was only 7" bullshit.)
I can and sometimes still do open a bottle of beer with my teeth.