Re hoarding diapers for barter; I think that I would have a hard time sticking (so to speak) it to a mom with kids and no diapers. If I had them and didn't need them myself (I'm not that old yet), I would give them.

Re cleaning cloth diapers; assuming that anyone can actually buy them anymore, when my wife was a single mom, working a couple of jobs, taking college classes, and doing Navy Reserve time, she washed her daughters diapers with an old fashioned scub board in the bath tub.

Re bartering; I like Hacksaws idea of learning a usefull trade. In normal times, electricians always seem to be doing a job for someone, then getting some kind of work done for them in trade. Obviously an electrician won't be of much help if there is no power, but being able to fix or make "stuff" could probably earn you all kinds of neat stuff in return...
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OBG