If you like Slushees but you hate the inconvenience of getting out of your car, entering your local convenience store, and paying upwards of two dollars, might I suggest the Slush Mug, a $10 mug with a freezable core that allows you to make your own slushalicious treats at home with just six hours of prep time and another six minutes of stirring.

via CrunchGear

I had one of these when I was little. It was awesome and you could make slushees out of anything - Coke, fruit punch, OJ, iced tea. I might have to pick one of these up.