Thanks for the suggestions!
I had thought about buying extra and keeping them at home. I'll definately give it a whirl soon. Soometimes I can't go every weekend so I wonder if the bucket and ice deal would hold them two weeks? I guess a cheap air pump for a fish tank and large plastic container from Wally world would be just as cost effective and easy. I'd like to try rigging some too. Never tried it but I have heard good things about using them.