The Ember Mug 2 is a smart mug that keeps your drink at your preferred temperature (120 to 145 degrees). It's on sale for $69.99 on StackSocial right now.

I used to think smart mugs were kind of ridiculous-until I tried the Ember Mug 2. Now I get it. This thing isn't just a flex for your desk; it's the end of lukewarm coffee sadness. I grabbed the 10 ...