When you’re born the richest/coolest baby in the world (meaning your parents are Jay-Z and Beyonce), you’re going to get some great baby gifts. Oprah mailed it in by sending a trunk of children’s books, but Beyonce’s Destiny’s Child compatriot Kelly Rowland came through big time: she bought Blue a $5,200 Swarovski crystal baby bathtub, which has to be the most ridiculous thing to buy for a baby …