[rew232]

I want to create a very large (5+ cubic meters) volume of bubbles in a very short amount of time (less than 2 minutes, hopefully 30 seconds). This needs to be cheap, safe, and relatively easy to clean up. What would you suggest?

My current best idea is to fill a large (~4' garbage can) with warm water and bubble soap, and then dump in some bags of dry ice pellets. The water will be as hot as I can get from the tap. What type of soap should I use? What is the ideal ratio of DryIce/WarmWater/BubbleSoap? Are there any simple catalysts I can use? Should I buy dry ice pellets as small as possible if I want the most noticeable reaction?

All suggestions appreciated!
 

[MissPhosgene]

releasing a large amount of CO2 in a short time period isn't very safe....

[DemonicAcid]

Releasing a large amount of any gas that has a density equal to or greater than air is unsafe. If it's going to be inside or there are people closeby, I would recommend using an air compressor.