I found this on the web and I hope I don't offend anyone by posting it. This looks like a very inexpensive way to build a green house or animal shelter. Simple materials, pallets and cattle panels plus stabilizing boards. Cover with plastic or tarps or shade cloth and there it is all set for whatever purpose. It wouldn't be too hard to put an old door into the front and an old window in the back. Just a little imagination and it could easily be a finished building. If you have high winds it could actually be fastened to cement pilings or some kind of posts.