How to Build a Bottle Rocket. A bottle rocket is fun and easy to make. You can build and launch a simple bottle rocket by recycling materials you might find lying around at home. Roll a piece of paper into a cone. This will be the nose.
How to Make a Cardboard Box Marble Labyrinth Game - Frugal Fun For Boys Engineering STEM activity for kids - Build a cardboard box marble labyrinth! Get the marble through the course without it dropping into the holes.