Here is another cute toy that keeps your kitties active and mentally stimulated. The Migipaws Whack-a-Mole Cat Toy has 7 holes and 2 levels. It has a distance sensor that detects when your cat approaches and rotates the feather automation.
This toy runs on a rechargeable battery that works for 7 days (30 minutes of play per day). You can find out more about it here.