Using polystyrene balls and static electricity you can create crowds that dance!
What you will need:
Step 1: Create Static
Stick the exciter of the DIY Speaker to the balloon, and then rub your hair all over the balloon to create static for the polystyrene ball to cling to
Step 2: Add the Crowd
Pour polystyrene balls over the balloon - they should stick to it because of the static!
Step 3: Let the Music Play!
Connect your DIY Speaker, turn it on, and play a tune...
Step 4: Watch the Crowds Jumping!
Enjoy as your crowds of fans jump to the beat!