Kids can create an endless and mesmerizing cascade of marbles. This 180-piece set, devised by Torino, Italy-based Quercetti Intelligent Toys, includes components to build a motorized, height adjustable elevator that works with any marble run configuration. This set includes an exclusive double entrance funnel and spirals, as well as transparent tubes to view sneak peeks of the marbles as they progress through the run. It also includes extra long bridges, sturdy base pieces and real marbles. Two "AA" batteries not included.
— For adults in Portland, Ore., marble runs by International Playthings are a fun purchase, reported Sarah Green, manager of Kids at Heart.
— This product was listed as a best seller by John MacDougall, owner of Golden Apple Learning Store, in Pleasanton, Calif., in August 2009.