My very favorite kids' quilt is Streak of Sunshine from Quiltville. I can do one in an afternoon (pieced, not quilted... I'm not Superwoman... LOL!). Goes with practically any # of fabrics. Just a blast to do. Here are a couple of pix of a couple I've done... OK, I can't get the silly things to load. Go check out Quiltville & you'll see...
http://quiltville.com/streakofsunshine.shtml