Celebrate Valentine’s Day with this one-of-a-kind, heat-sensitive mug that combines nostalgia with heartfelt design! When cold, the mug displays a Heart design in white letters, styled like an IllumiPeg refill template for the Lite Brite toy. Add a hot beverage, and watch as the mug “lights up,” revealing the colorful pegs behind the white letters to complete the vibrant heart. This design originally appeared in one of IllumiPeg’s refill sets for the classic 9x12 Lite Brite, featuring color-coded letters—O for Orange, P for Pink, and more—just like the original toy. Expertly crafted with sublimation and laser engraving, this mug is a perfect blend of creativity, craftsmanship, and Valentine’s Day charm!