Elizabeth is mixing up a batch of liquid nitrogen ice cream.
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How many washers can you float in your boat?
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25, 26, 27... How many can I add?
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Modulating sound through a laser light to make a radio station.
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Woa--this alpen horn is fun to play!
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A 10-foot alpen horn. What will Roger come up with next?
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How many ways can you use pcv tubing? Just ask Roger Boyce, the demo guy!
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I wonder if I can get more than 2 notes out of this thing?
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Will there be a snake coming out of the end of it? Come back to SpringFest next year and see...
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