To make a spider web on a trampoline, first tie the ends of several pieces of commercial grade nylon rope together to create a large “web”. Next, reach up and attach the ropes to one of the trampoline poles, making sure that the web is stretched tight across the frame. Stretch more ropes between the poles and tighten them up as needed to create a sturdy framework. Finally, drape fabric over the web to create an overhead canopy or roof.