The easiest way to make a balloon rocket that travels in a straight line.
Material:
1. Balloon
2. A drinking straw
3. Sticky tape
4. A piece of smooth long string
Simple Balloon Hovercraft
A hovercraft is capable of traveling over surfaces while supported by a cushion of air.
Material:
1. Old CD or DVD
2. Plastic drink bottle top
3. Balloon
4. White glue
Material:
1. Old CD or DVD
2. Plastic drink bottle top
3. Balloon
4. White glue
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