For your hamster
The Zhu Zhu Pet Hamster may be this year's hottest toy. But why go for the knock-off when you can have the real thing? With a Critter Cruiser, you can put your real hamster in and watch it put the petal to the, well, plastic. As an added bonus, you can get a "Hamtrac" for your Critter Cruiser and watch your hamster do laps, NASCAR-style.