Bring hands-on construction, imaginative storytelling, and gravity-powered play together with the Contixo MK1 Marble Track Building Set. This 118-piece STEM toy lets kids ages 3 and up build an interactive marble-run world using large snap-fit blocks and functional track pieces designed for easy assembly and repeated rebuilding. A hand-crank elevator lifts the marbles to the top of the track before releasing them through slides, spirals, curves, and multiple winding routes for dynamic motion and discovery. The charming animal-themed scene includes a rabbit house, garden details, and character figures that encourage creative storytelling while children explore cause and effect, problem-solving, fine motor skills, and early engineering concepts through open-ended play. | Contixo | | MK1 Marble Track Building Set, 118-Piece STEM Toy with Elevator Lift, Rabbit House & -Lane Marble Run, Ages 3+ | Best Buy