The Ember Smart Mug 2 is currently available for around £90—a significant discount from its usual price. This quirky gadget warms your coffee to an optimal temperature via a smartphone app, then switches off when you leave the room.

Available in blue, white, black and purple, with 10 or 14-ounce options, it promises up to 80 minutes of heated goodness before needing a recharge.

The mug’s self-heating feature means less time staring at microwaves, but beware: the proprietary warming system isn’t dishwasher safe. Hand-washing is required to avoid costly replacements.

For those who prefer simpler solutions, our guide to the best coffee warmers may provide some comfort. Alternatively, explore our picks for espresso machines or pod coffee makers if a smart mug still seems like overkill.