Boo Boo bunnies are a blast from the past!  A thick, terry wash cloth is folded to resemble a bunny and has a plastic ice cube set into the belly.  Freeze your bunny and he's all ready to fix up the next "boo boo".

Bunnies come packaged and include a poem...

"If a boo boo has you feeling crummy,
Stick an ice cube in my tummy.
  Hold it to your boo boo tight,
Soon everything will be all right!"