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/
Outdoor furniture cleaning solution: to 1 gallon of hot water, add: 1 cup Borax, ½ cup hydrogen peroxide, ¼ cup liquid dish soap (whatever you have on hand, but I like Dawn). Stir to dissolve Borax, then apply to furniture & cushions with a brush or scrubby sponge (check fabric for colorfastness, but peroxide would usually have to stand on fabric for hours to have a bleaching effect, if any). Rinse & repeat, if necessary.