h a l f b a k e r y
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This is a super twisty straw (lots of s.a.) that is placed into your drink. It doesn't open to the liquid but winds around and comes back out away from your face. It attaches to a cryo-freeze cannister. Spray for a couple secs, while swirling you drink and it cools. Perhaps used for camping.
Halfbakery: Ice cooled swirly straw
Uses ice instead of cryo-freeze. [jutta, May 07 2009]
||Nice idea. The compressed gas could be the camping gas used for the burner, so you have cold drinks with your meal.
||Now that would be cool, if every time you released gas for cooking it was first used to chill your camp coolers on the way to the burner.