When I was in Indiana a few weeks ago I visited the Indianapolis Museum of Art. I had seen photos of tapestries created by African artist El Anatsui but had never seen one in person. Wow -- they are composed of recycled, flattened liquor bottle caps (aluminum) joined together with copper wire. I wish I had been able to photograph it up close. It is spectacular from a distance and captivating on close inspection. This piece is 17 feet wide and hung so that it undulates. The museum website has a video clip that shows its installation along with some closeups and commentary about the piece. Very inspiring!