We saw a great banging wall at Blissfest last year and have been wanting to make one in our yard. I started collecting all our old pans, olive oil cans and anything else metal that would make a great sound. Tommy took some heavy wire and strung it between two posts (our hammock used to hang here but is now on the other side of the yard). He made a "banger" with an old water bottle and a tree branch, using a little duct tape. Now we can bang out all kinds of rhythms!