|How about this?!|
The Bucket Still is the simplest you can imagine without a special electrical heat source, just using sunshine. Float a bowl in the wash, cover the lot with a layer of plastic or clingwrap. Sit something heavy on the clingwrap so that any condensate that forms on the wrap will run down to the middle, and drip into the bowl. Leave the bucket etc somewhere warm.
The improved Bucket Still
In case you want to build a bucket still, you can improve it's preformance by adding an electrical heatsource, while maintaining a very simple and cheap design.
(click to enlarge)