Brecken evidently thinks that anything that is cylindrical like a cup is actually a cup that might have something to drink in it. This empty metal container holds stuff on his bookshelf but he pulled it off and kept tipping it up like something might come out of it! Its pretty cool thats he's understands that it can hold things and that it's similar to a cup. He also lives the cup we use in the bathtub. He fills it full of water and then tries to drink out of it - yuck!