Ice can be such a pain. It's not electronic and it waters down your drink. Everyone hates that. So now there are these steel 'pucks' that will take care of those issues for you. Each will reduce the temperature f your drink a given amount. Want colder? Add more pucks. The developers of this idea needed 2500 bucks -they've racked up 62,000 so far. So people really really need rechargable steel pucks to cool their drinks like, right now.