I think these are so cute. I have also seen pom poms used as a baby mobile... a few really large ones, a medium sized one and some small pom poms right above the crib. I don't believe they were made out of T-shirts though... I think it was tissue paper. It was so adorable and gave the room a huge punch. Maybe I'll find the picture around here somewhere for ya! Check out the tutorial over at Craftaholics Anonymous. SO easy!