Hi, welcome to the board.
Incase you missed the page there is a bit on toys for indoor aviaries here:
http://www.super-chipmunks.co.uk/toys.phpMine do like their Wodent wheels (Senior size), and I have just ordered another four as a first time order from these people:
http://www.equinecaninefeline.com/catalog/index.phpI've also ordered for the first time a couple of Happy Trails Formable Rope never seen that before, so will let you know how I get on, might even arrive tomorrow. I used to use PetPlanet but they mucked up the last order for me, so I'm trying Equine Canine Feline.
Look in the corners, most of mine will back in to a corner, tail up, to go to toilet. I put down wood pellet cat litter or chunky saw dust. Don't use the expanding cat litter as chipmunks can eat it and die when it expands inside them. Avoid the fine saw dust as people have said it can clog up their noses.