amazon.com/gp/product/B0006OHMU6?psc=1&redirect=true&ref_=ox_sc_sfl_title_2&smid=ATVPDKIKX0DER This is the perfect gift for a tween girl. It is unique because it lets the child make their own bath products but introduces them to chemistry in a fun way that they don't even realize they are learning. It is crafty and educational at the same time.