Ravensburger GraviTrax Junior Advent Calendar 2026

With 57 pieces, the Ravensburger GraviTrax Junior Advent Calendar offers diverse building fun during the pre-Christmas season. The winter-themed marble run set includes hexagonal base plates, curves, ball elements, and matching figures such as reindeer, a penguin, and festive decorations. Day after day, new building blocks expand the modular track, gradually creating your own custom marble run. The system supports spatial awareness and creative construction through grippy, easy-to-hold components. Thanks to the intuitive plug-in principle, the elements can be stably connected and rearranged over and over again.