Originally Posted by Faster
I like the pump-up idea.. no need to 'hang' it anywhere.. but that won't stow as nicely as the soft ones..
True, but it's not big (take a look at the video in the link, and how it can be used for other things as well - it's more useful than merely a gravity fed shower bag).
If you had the space and wanted to be able to heat it up on the stove top, you could go for this "luxury" version (the burner and foot for it can be dumped):
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