Can't Live Without....

There's always the obvious; food, shelter etc. but if there was one nonessential life item you "can't live without", what would it be?

My "can't live without" item is coffee.

 

Hot, cold, drive through, fresh brewed at home, gourmet, foldgers, doesn't matter as long as I get my coffee everyday....

This is just sheer curiosity but I'd love to know. What is your "can't live without" item?