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  • Sold out
    Original price $5.99
    Original price $5.99 - Original price $5.99
    Original price $5.99
    Current price $5.75
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    Current price $5.75

    Geyser Tube (Unavailable)

    Learn how to create an enormous geyser by combining Mentos® with soda. The erruption is amazing, up to 25ft high, and so is the scence just bene...

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    Original price $5.99
    Original price $5.99 - Original price $5.99
    Original price $5.99
    Current price $5.75
    $5.75 - $5.75
    Current price $5.75
    Sold out
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    Original price $2.99
    Original price $2.99 - Original price $2.99
    Original price $2.99
    Current price $2.75
    $2.75 - $2.75
    Current price $2.75

    Garbled Marbles - Super tube

    Use the Giant Tube to grow gobs of slimy colorful "marbles". Just add water to the small beads and watch them grow! They are perfectly round and th...

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    Original price $2.99
    Original price $2.99 - Original price $2.99
    Original price $2.99
    Current price $2.75
    $2.75 - $2.75
    Current price $2.75
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    Original price $12.99
    Original price $12.99 - Original price $12.99
    Original price $12.99
    Current price $12.50
    $12.50 - $12.50
    Current price $12.50

    Windmill Generator - GS

    Build this amazing wind generator and learn about renewable energy. Watch the LED glow as it is powered by free energy from the wind. No batteries ...

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    Original price $12.99
    Original price $12.99 - Original price $12.99
    Original price $12.99
    Current price $12.50
    $12.50 - $12.50
    Current price $12.50
    Save 4% Save %