You know, I'm almost thinking that a person could make one of these in a pinch using two garbage bags, one clear and the other black. The clear plastic bag could be set up over the black bag in tepee fashion with sticks, and a center hole with a secondary "moat" dug around, both lined with the black bag could serve as the reservoir and catch.

Eh... Then again, why not just dig a hole and go with the basic solar still. Nevermind. LOL

Overthinking the problem...