Place a rubber band around an open paint can to wipe your brush on, and keep paint off the side of the can.
Use a staple remover to save your fingernails when trying to add things to your key ring.
Use bread clips to save flip-flops with split holes.
How to put shoes in the dryer
Use sunglasses or a small convex mirror to avoid people sneaking up on you while wearing headphones at work.
How to keep the straw from rising out of your soda can.
Use a comb to steady a nail for hammering.
Use a post it note to catch drilling debris.