I had seen something similar on Pinterest a couple of years ago so I started buying glass floats whenever I caught them on clearance. I finally thought I would have enough and got started. The first attempt was great until I turned it right side up and all the floats moved since they were not as tightly packed as I thought. Second attempt was better since I used wire to keep them in place and then wire across the bottom to keep them all in place. Put a flower pot in the bottom chained it to the tree and bench and I was done!!!