Children's Place has a Memorial Day sale going on. Get $5 shorts, tanks, leggings, plain tees, and graphic tees. Shipping is free if you order $75 or more. Selection in stores may vary.
Here's a tee I kind of liked for my little man that's just $5:
You could try code W7D2011 to see if you can get the extra 15% off. If the code works for you, please post.