Fun for the kids and us adults. We love the stuff we make with it but the one issue. The housing the liquid goes in is two parts instead of one. That means the glue that holds the two parts together is starting to lose its strength. This is letting liquid in and some people are getting stains in the housing. It’s not a ninja flaw it’s the glue they purchase for the manufacturing of the housing. I just put a food grade silicone around where it meets so it could not stain mine. Long story short, it makes good drinks but you could get a stain.