Homemade Wheel Chocks For Motorcycle This Is A Wierd Question But How Do I Make A Mouse Exercise Wheel HOMEMADE?

This is a wierd question but how do i make a mouse exercise wheel HOMEMADE? - homemade wheel chocks for motorcycle

I know that's not really the answer you are looking for, but really what it would cost that much for you to purchase 1 to PetSmart for $ 4 .....