My grandparents used cotton wool packed in a piece of gauze. There are plants providing acceptable cotton wool (which is more acceptable and hygienic than manure), let me recommend some: https://en.wikipedia.org/wiki/Asclepias_syriaca , https://en.wikipedia.org/wiki/Populus_euphratica ,  https://en.wikipedia.org/wiki/Clematis . These are extremely resistant to  drought, don't need maintenance (except that they are invasive and need to be controlled). I believe there are a lot of fiber producing endemic plants, too, providing much better hygiene than manure.  Planting and harvesting these plants don't require considerable investment, just the spread of the knowledge (and maybe the seeds).  I hope this might help a bit.

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My grandparents used cotton wool packed in a piece of gauze. There are plants providing acceptable cotton wool (which is more acceptable and hygienic than manure), let me recommend some: https://en.wikipedia.org/wiki/Asclepias_syriaca , https://en.wikipedia.org/wiki/Populus_euphratica ,  https://en.wikipedia.org/wiki/Clematis . These are extremely resistant to  drought, don't need maintenance (except that they are invasive and need to be controlled). I believe there are a lot of fiber producing endemic plants, too, providing much better hygiene than manure. 

Planting and harvesting these plants don't require considerable investment, just the spread of the knowledge (and maybe the seeds).  I hope this might help a bit.