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HOTOY Balloon Racer
HOTOY Balloon Boat
STEAM DIY - Wind Power
STEAM DIY - Clown Walking Tightrope
STEAM DIY - Drip Timer
STEAM DIY - Saltwater Power
STEAM DIY - Compass
STEAM DIY - Blow Ball Machine
STEAM DIY - Ferris wheel
STEAM DIY - Coin-eating Robot
STEAM DIY - Walker Robot
STEAM DIY - Hydraulic lift table
DIY Science Crafts - Metal Detector
Solar Energy - DIY Plywood Solar Waterwheel
