I recently got my WW (Pancake) from a pet shop, who gets them from a WW breeder.
I've found he isn't much of a foodie and he often acts bored at night and is always happy to be picked up from his cage. I think he's just happy to have something to do when I hold out my hand to let him out!
He has a wheel and a few tubes, but what other things have your WWs really liked?
I'm from the UK and theres a Wilkinsons and a Pets at Home quite close so I could get things from there.