A blog that I follow, Design Love Fest has a fun feature that allows you to download art for you technology. Desktop backgrounds, Iphone backgrounds, and Ipad backgrounds. It is an easy way to change up your tech with a new style. I also think it is an interesting way to find new artists and graphic designers. So if you are looking for a quick change for you Iphone then check out Design Love Fest's "Dress your Tech" feature.
all images from Design Love Fest