David,
I want something a lot bigge and more durable than a condom, but thanks for the suggestion. I am looking after a situation where I had to hike 200 yards down sand dunes to a lakeshore to bring water back to put out a fire. Making trip after trip with my MSR pot was a pain in the a$$. I figured I would rather have a bucket than some container meant to hold clean, filtered water, because I can always filter it from the bucket, plus it would fill faster.