The Peltier USB Can Cooler/Heater will make drinks frosty or toasty, and hold onto them as well. You would think this feature would come standard, but sadly very few are actually functional cup holders. We've seen precarious tray designs, a fridge mock-up (which, while it does technically hold your drink, doesn't provide the easy access a cup holder should), and some other interesting ideas, too. Despite looking like a big blob of plastic with an area for a cup punched into it, this one's cup-holding prowess gets the USB Can Cooler/Heater an easy thumbs-up.
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