Projects which might be useful...

[TWP]

There are seven projects listed here:

http://www.theprepperdome.com/7-off-grid-projects-for-survivalists/

One, which I find "doable" is the solar water still.  It is the same design as a classic water recovery method (hole in the ground, cover with plastic sheet, bucket in the center and a rock on the plastic).  But this one is done with hardware and could be expanded to multiple units for more water production:

http://www.motherearthnews.com/diy/home/how-to-make-a-solar-still-ze0z1209zsch

If you have ever seen the roof top "solar" windows, a bubble shaped plastic window which is mounted on the roof to allow sunlight to enter the home...  Those would work better than the flat pane shown in this project.