Ember Mug 2, 14 oz

If your desk coffee routinely goes cold while you answer one more email, this gray 14-ounce mug makes a persuasive case for a heated handle on the situation. It keeps drinks between 120°F and 145°F for up to 80 minutes on battery power. Leave it on its charging coaster and you can stretch that warmth through the workday instead of racing your coffee to the bottom.

The appeal is picking your temperature rather than accepting whatever lukewarm stage you catch it at. Use the Ember app for precise settings and notifications, or skip the phone connection: it defaults to 135°F and remembers the last setting. A small LED tells you when your drink has reached its target temperature. For someone who takes three sips, gets distracted, and returns much later, those are useful tricks rather than another reason to stare at a screen.

I'd put this on the desk of a slow coffee drinker, especially one who stays near the charging coaster. The catch comes at cleanup: the scratch-resistant coating doesn't make it dishwasher-safe, so this mug adds a hand-washing chore to your coffee routine.