There are a few materials needed because this instructable is rather an easy one. However every material is important. The pictures below show most of the materials.
2 vacuums (preferably handheld or canister because they are light)
2 tubes that can fit from a vacuum to a vacuum glove
6 by 1/2 screws with washers
2 pieces of wood, the larger the area, the more weight it can hold( but be careful, the wood can get very heavy )
rubber to fit around the piece of wood
Most of the materials can be found at Lowes.