When this family spotted a coop they liked for just over they decided to make their own version at a fraction of the cost. Its hinged door folds outward, making it easy to reach in and grab eggs. Get the tutorial at Housewives of Riverton.
Instructables user, TheNaib, has written a tutorial on how to create a solar thermal water heater for under five dollars. It will involve a fair amount of DIY, but nothing too complicated. It's designed as a fun project, but with some tweaking it could