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SMOKE RING LAUNCHER

5 years ago 229215 3

RUBE GOLDBERG CHAIN REACTION

5 years ago 22654 0

ROPE CLIMBER

5 years ago 22273 0

Exploding a Watermelon

6 years ago 21967 0

HOT AIR BALLOON

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NEWSPAPER TABLE

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BUBBLE SOLUTION

5 years ago 20757 0

VINEGAR & BAKING SODA

5 years ago 199012 0

BOTTLE ROCKET

5 years ago 19456 0

CONVECTION CURRENTS

5 years ago 18894 0