Cut a strip of mesh cloth or fishnet to the length and width you want the hammock to be.
Thread a piece of strong string through the mesh on each short end of the cloth. Leave 3 or 4 inches of free string on each corner of the hammock.
Pull the strings together on one end of the hammock to gather the cloth on one side. Tie the strings around a suction cup hook or a vertical cage ornament such as a lighthouse or tree. Pull the strings together on the other end of the hammock and tie around the hook or ornament.