Junkyard Challenge

Giving certain materials, you need to build a bridge, tower, or cantalever for Regionals and a ramp, catuplult, or bouncer for States (any will be chosen for Nationals).

Materials: 1-5 Plastic golf balls, 1-8 golf balls, 1-10 tennis balls, paper/ styrofoam plates, cups, and bowls, straws/ stir sticks craft sticks, toothpicks, non-metalics string, line, thread, tape, Paper, Rubber bands, Plastic bags, Scissors, all this has to fit in a "junk box" that is no greater than 95 cm (length+width+height)

A competitions: