The SlackBoard Marble Trainer is a wooden plank with a built-in marble maze that attaches to your SlackBoard or SlackBoard Plus with 1 line. Hold a plank or stand on it, then shift your weight to tilt the board and guide the marble through the maze.
While your focus stays on the marble, your body makes constant small adjustments. In a pla
5.0
1 rating
5
4
3
2
1
Fun puzzle, really makes you think about your stability motions.