I used crumpled up brown paper for the walls, and cardboard for the rest. There are two levels, the top one is the main room, t the bottom one is the garage. The Bat-bot is made from a Transformer (It turns into a train-would appreciate it if anyone could tell me what it was), my batmobile is Bruce Wayne's Custom Coupe but modified to fit 6 inch figures, the batcave chair is a robot toy from McDonalds, the motorcycle I think is from a Power Rangers toy, the dune buggy is from GI Joe, the armored Batman in the garage is a Kingdom Come Batman, and the Bat-computer was made from a calculator and a print-out of the computer screen. The various items seen around the cave are Green Lantern's lantern, a crate I made from popsicle sticks, Han Solo in carbonite, a pez dispenser of Batman's first cowl, the Red Hood's cape (from Unmasked Joker) and a toy '66 batmobile.