Take a large sheet of Styrofoam and mark lines ... Cut out a ball from a thick piece of Styrofoam, or glue together circular ...

When it is about 5-10cm away, the pieces of tissue paper should jump back and forth between the pie plate and the Styrofoam. B1. Cut a shaft of Styrofoam from the large piece (about 2cm x 2cm x 10cm) ...