I have been looking for ways to make distilled water without electricity
or making a complicated solar still.  I thank you for your great
suggestion.  Here is another one I found last night but have no idea
where (hope it wasn't on the CS list).

"Well, if it was me, and I was in Africa, I'd probably try a solar still
to distill my own water. You'd need a large clean container to hold the
water to be distilled, say a large kettle with an inch or so of water in
the bottom. In the center of the large kettle put a smaller clean
container, say a drinking glass. Now cover the kettle with clean plastic
sheeting, and place a small weight, like a stone in the center of the
plastic so that the weight of the stone makes the plastic droop down to
a point, directly over the smaller container. Set this whole contraption
out in the sun and let it cook. If you've set it up right, the heated
water in the kettle will condense on the inside of the cooler plastic.
The condensation will coalesce and run down to where the stone is and
drip into the smaller vessel in the center of the kettle. This sounds
like a slow process, but if the sun is really hot you'll be surprised
how much it will make in a day."