Things You'll Need
Instructions
Scoop out a round piece of the modeling clay -- about 1 inch in diameter.
Press the modeling clay into the bottom of one of the drinking cups. This acts as a weight for the bowling pins. Substitute a few rocks if you don't have modeling clay.
Turn another plastic cup upside down on top of the cup with the clay inside it. Both cup openings should touch each other.
Wrap a piece of duct tape around the rims of the two cups to hold them together. Overlap the tape slightly to seal the cups. Repeat the method until you have ten bowling pins for the game.
Set the bowling pins up on one side of the room in a triangle shape. The row nearest the wall should have four bowling pins, then a row of three, a row of two and finally the head pin. Use a tennis ball or other similar size ball as the bowling ball.