Marble run -
The Xyloba interlocking system has an almost unlimited number of different setup variations. The fun really begins when builders also compose music with Xyloba.
Chimes of various pitches can be built into the marble run. Which chimes you use determine which melody will play. As the marble rolls down the track, it strikes the individually mounted chimes. Ramps of different lengths produce the rhythm. By referring to the composition instructions, even young children can construct fantastic tunes.