Cut a hole in the side of a plastic container, wide enough to fit objects that you would like to magnify. Now lay clear plastic wrap over the top of the container. Use a rubber band to hold the wrap in place, then press down in the middle to make the wrap sink a little. Pour water onto the plastic wrap so that it forms a pool. Now you’re ready to put small objects inside the container and see them magnified by the pool of water.
Photo by Ken Karp