I know, this isn't a tech gadget, but it's pretty awesome. I've always wanted a Yeti tumbler because I'd heard so many good things about them. This year I got one on my birthday. (Orange...my favorite color!) It's as amazing as they say. I drink iced coffee. I make it the night before, chill it in the fridge overnight and then pour it into my Yeti tumbler in the morning along with a few ice cubes. The ice cubes will still be in the bottom of my tumbler when I'm heading home late in the evening. In fact, one time I didn't dump them out until the next morning! The Yeti tumbler will definitely keep your beverage hot or cold ALL DAY LONG! I got the 30oz tumbler so I can enjoy my drink all day. I highly recommend one! This is a picture of my own Yeti down below. They have a wide range of sizes and products. Get your Yeti Rambler tumbler here!