I leave piles of them all over the house. Find them in the bottom of every purse. When Jon needs something small to break a lock or jimmy something around with, "oh here" and I pull one out of my hair - like Velma on Scooby-Do! But when I find one that isn't black, so I know it's not mine? (hurk!) Gross.
I have been known to search the corners of the gym looking for one to use when I couldn't find one in the depths of my purse, or between the seats of my car. No shame.