http://www.thediyworld.com/blog/?p=862 Use a rain poncho or simple plastic tarp to make a shelter in 3 minutes with this easy idea.
This shelter uses your backpack as support for the shelter itself. This protects the backpack from the weather as well as yourself.
You can use a rain poncho or plastic tarp to make this simple easy up and easy down shelter. All you need are a couple pieces of rope or stakes.
Carabiners on your backpack help fasten the poncho to your backpack faster.