This is an early draft of my submission for the noisemaker challenge. The idea is easy customization and the ability to "compose" tunes. While the musical character may be limited I can imagine this appealing to children as a way for them to build/customize a music box. The system works like a typical music box, the cylinder would contain ridges which lift the arms. These arms then hit back, creating sound. What differentiates this from other designs is the ability to re-arrange these ridges. The system holds 32 rings on a splined shaft that has been optimized for 3D printing. There are 16 "flaps"-each with different characteristics (8 lengths+2 thicknesses) that can be actuated by these rings. This will inspire experimentation since we all know that kids love to make noise.
If anyone has any questions, comments, or critiques please let me know.