FANTASTIC!
Got this as a stocking stuffer for my daughter and couldn't be happier with the results.  It really does a great job of foaming up and floating across the water with trailing colors of the rainbow!  She identified all the colors reciting ROYGBIV with many squees of delight and giggles.  It has a lovely light scent and bubbles up lightly but nicely.  It was worth the price for the special treat and gift.
Rating: 5 stars