This Boo! Glow in the Dark Ghost Enamel Pin Set by Shannon Talbott is insanely cute! Made of hard glow in the dark enamel and black nickel plating, the pin is made up of two pieces - the ghost and the Boo! bubble. The ghost is about 25mm tall and there are rubber clutches on the back.
Use it to dress up a bag, backpack, hat, and more!