Cats love to play with laser pointers. This is the only reason I got my kids a cat. If you like to shine the red dot on things so your cat goes crazy, but you are too lazy to actually work the pointer, ThinkGeek has your fix.
The Laser Collar Pet Toy will work for most dogs and cats, and I guarantee that your pet will go nuts from the never-ending red dot of doom. It doesn’t include the collar itself; rather the laser is designed to fit onto any collar up to 0.5-inch wide and 1/8-inch thick. That’s a good thing since you can get a collar to fit your pet and attach the laser.
The Laser Pet Collar toy is also very cheap at $9.99. The downside is if your pet is nefarious, it may chase you with the never-ending laser beam and shine it in your eyes until your retinas burn.