Baby Wipes

Wipe down restaurant high chairs, shopping carts (even if just the handle where you hold).

Quick hand wash if soap and water or Purell is not available.  Keep some in the car to wash after pumping gas, changing tires, etc.

Makeup remover.  They are gentle enough, but still gets rid of the makeup.  They are quick and easy.  Great for trips when you don't want to pack too much.

Stain remover from clothing.

Wipe the dog or cat down once a day.  The loose hairs will stick to the baby wipe.

Quick cleanups for the counters or table after the kids make their art creations.