Rave Duck

A ultra rare glowing bath toy. Only two were ever created, and they were sold to a thrift store for 25 cents. They were subsequently purchased by some douche-bag and his "girlfriend" at the time. It changes colors and produces joy to all those around it, and collects autographs.

Observer: What is that magnificent glowing thing that dude is holding?
Enlightened one: That is the one and only Rave Duck