I started collecting pocket screamers two years ago, not sure why really, but they do make great display items, and they're like Beanie Babies in their appeal; but these babies are much creepier and scarier, and therefore perfect for Halloween.
A Halloween animated novelty that plays like a spookhouse ride. This was the first one that started my collection. I picked it up quite a few years ago (at an Eckerd or Rite Aid Pharmacy, I believe). No maker information is given for it except the "Made in China" sticker on the back. The clever spookhouse ride design of the box really sets the tone for the creepy skeleton pushing through the doors while the soundtrack says "I'm going to get you!"
Here's another animated Medusa bust for Halloween display. Or year-round display if you're like me. Clever design places the play button as the snake head pin on her left shoulder. (see the other one I saw at Lowes).