DIY cushions for patio furniture. Super easy. I didn't have old cushions to cover so I used layers of cheap bed padding foam wrapped in batting. Look here for how to do boxed corners that are not covered well http://craftapple.wordpress.com/2007/09/01/sewing-tip-squarely-boxing-those-corners/
DID IT! No Sew Project: How to recover your outdoor cushions using fabric and a glue gun. So doing this to my ugly old half dog chewed furniture cushions! I actually sewed mine and used heavy duty Velcro on the edges so they can be washed. Two years later and still look awesome!
DIY outdoor furniture cushion cleaning solution: in a spray bottle, fill 3/4 full, then add 1 tsp. of dishwashing liquid and 1 tsp. of borax. Fill spray bottle to the top, then shake to combine. For full how-to steps...click in!