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Geyser Tube
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$5.99
$5.75

Geyser Tube

Nature's Workshop Plus

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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$5.99
$5.75
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Garbled Marbles - Super tube
Garbled Marbles - Super tube
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$2.99
$2.75

Garbled Marbles - Super tube

Nature's Workshop Plus

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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$2.99
$2.75
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