Easily improve the look of you daily lessons, class website, newsletter, bulletin boards, art projects outfits and more! Color Scheme Designer makes it so easy to find great color schemes! Even easier to use than Peacock (part of the Aviary Suite) and ColourLovers (also helps you find great patterns). h/t FollowMolly
UPDATE: SmashingApps lists these 45 other color tools, so you're certain to find one you like.