Cryoscope

Sure, it can be useful to check the weather on your smartphone, computer, or local news station, but it doesn't really help you to know what it's actually going to feel like outside. The Cryoscope ($300 and up) does. This crazy contraption heats or cools its top slab to a certain temperature, depending on the mode — time shift mode will give you the forecasted temperature, while space shift can give you the current temperature of anywhere you specify — letting you literally feel the temperature you're looking for. Useful for commuters, travelers, or those who want to torture themselves by checking the current temp in Wailea.