I picked up the set of 2 Slush & Shake Makers and they have been a big hit at home. Both the red and blue units work the same way, and I was surprised that slushies and milkshakes came together in about 7 minutes right on the countertop. We have used them for fruit smoothies and frozen drinks for the adults, so it really does cover kids and grown-ups. Simple to use with ordinary ingredients, and having two means less waiting when everyone wants something at once.