Check out this article on the Huffington Post that mentions our Marble Run Ball Tracks!

Marble Runs Marble runs are a great option for allowing girls to build a working contraption. There are several great options available but my daughter loves our Haba set, which incorporates blocks, bells, and musical components. Marble runs encourage open-ended building and problem solving and can constantly be changed. Adding or removing pieces is a way to keep your child constantly challenged.