New York Post If you’re currently sweating because you only just realized Mother’s Day is on Sunday and you’ve got nothing but a half-baked plan to “call her,” take a breath. Before you panic-buy a well-aged grocery store bouquet that may have been better harvested from a highway median, there’s a better way to Mom’s heart. Coffee has approximately a three-minute window of perfection before it turns lukewarm, and Mom doesn’t deserve that. This year, give her the gift of consistent heat and stop making her trek to the microwave with the Nextmug , currently 23% off on Amazon to boot. Nextmug Amazon The Nextmug is a 14-ounce, temperature-controlled smart mug designed to maintain beverages at a specific heat setting (Warm, Hot, or Piping) for hours. It features an on-board control button, eliminating the need for a smartphone app or complicated Bluetooth syncing. The mug comes with a docking coaster for continuous charging and a spill-resistant lid to keep heat locked in.…