In Science we had to make a chain that would be able to hold Weights. The weights were 200g, 400g, 600g, 800g, 1000g. The chain needs to be able to hold all of these at the same time. It first we tried one rubber band in between each pipe cleaner but it was too weak and the rubber band was going to snap to be doubled them up and then it streched pretty far but still worked. The materials we used on this chain were; 10 pipe cleaners, a few inches of string and 10 rubber bands. The chain seems to work out well but we will have to see how it does during the 30 second test.