http://www.whimsys-menagerie.com/cageaccessories.htm
Just wanted to mention that no matter how pretty those bridges that are they are not chinchilla safe. I have seen and heard of, many chinchillas get a leg caught between the slats and end up breaking the leg. It's not worth it to take the chance just to have something pretty in the cage. I highly recommend the "Squiggle Bridge" from Camphor Chins. It's solid so they can't get their legs caught between slats and it's very pretty.
http://www.camphorchins.com/store_cage.html
Hanging bridges are ok as long as there are no spacer beads. The slats have to be tightly against each other to keep them from moving around too much (to keep a toe from getting pinched).