Ember’s smallest self-heating mug is on sale for just $33

We’ve been fans of Ember’s temperature-controlled mugs for years, though given the price tag, we admit that they’re somewhat of a luxury purchase. Thankfully, if you’ve been looking for a more affordable option, Woot is selling the Ember Cup in black for $32.99 ($67 off) with a 90-day warranty through November 7th. You can potentially save even more as part...