By the end of a long day that started at 4 a.m. Monday ... say no one makes marbles like he does. He smiles and deflects the praise. The collectors will finish the marble run Tuesday, let them ...

From wooden constructions to magnetic pieces to glow-in-the-dark marbles, marble runs vary in design and style. You can find marble runs for toddlers 3+ or more challenging options suitable for ...

Rolling a marble ... for a marble run. Make a plan and test each stage individually before moving onto the next section. Note: use a ping-pong ball for tiny tots instead of marbles.

Marble run toys typically rely on just gravity to send a marble careening through a complex maze of obstacles, but the creator of Marblelous thinks they can be improved through technology.