Half a croissant, on a plate, with a sign in front of it saying '50c'
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Nuclear critters

Unleash the carbon nation.
  (+21, -1)(+21, -1)(+21, -1)
(+21, -1)
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A barely un-buoyant, non-toxic, acid-etched plastic figure, say a crab, is loosely attached to a helical straw by a hinged sleeve.
When inserted into a carbonated drink, nucleated bubbles causes the crab to rapidly climb upwards around the straw. Reaching the surface the hinge is released which tips the crab, dislodges most of the bubbles and it decends until the hinge is re-engaged.

Dancing Mothballs http://www.newton.d.../gen06/gen06247.htm
It remids me of this. [Wrongfellow, Feb 12 2011]

[link]






       I like this.
MaxwellBuchanan, Feb 12 2011
  

       Giant Squid.   

       [+]
8th of 7, Feb 12 2011
  

       Reminds me of those cereal box submarine toys that operated using sodium bicarbonate.
RayfordSteele, Feb 12 2011
  

       + hey, I missed this one!!!!
xandram, Feb 17 2011
  

       Kin to the champagne raisin, I think. Should this not be "nucleating critters"? But yes. Yes!
bungston, Feb 17 2011
  

       Sp. "nucular".
Custardguts, Feb 17 2011
  

       //Reminds me of those cereal box submarine toys that operated using sodium bicarbonate.//   

       Seems most cereal box toys are crap, now. That and the cracker jack prizes.   

       [2Fries], your idea is awesome, which leads me to believe that you are awesome. So I am inviting you to my bonfire party next wednesday. byob.
MikeD, Feb 18 2011
  

       very good
hippo, Feb 18 2011
  

       Wow uh, thanks. I don't think I'm awesome... but I'm wrong a lot so y'never know.
A bonfire party sounds pretty good. How long is the drive?
  

       Wait...
I wouldn't be the kindling for this bonfire would I?
  
      
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