These have been around forever but never fail to delight me. I think my adult self needs to pop out and get one of my own.
Who hasn't wanted kitty ears that move realistically based on what you're thinking?
Available at: Rakuten http://en.item.rakuten.com/wich/kittyscope/ ($21.36)
There wouldn't be cookies in the first place without the science of baking. Celebrate it!