[header] How to train your hamster to jump through a hoop [title] Get a hula hoop that is hamster size. [step] It could be a large ring covered in ribbon or a purpose-made one from the pet store. It must be large enough that the hamster can fit through it with ease but not so large the hamster isn't aware of going through an object. 
[title] Put your hamster on the floor, next to the hoop sitting flat on the floor. [step] Get a treat or push your hamster a little over the hoop.