The Sprocket is a funky musical vehicle of Noridan that features a 2nd story junk drum kit, trash marimba and thongaphone, and various tuned percussive discoveries.

• 环保．活力音乐会所演奏的前卫自制链轮乐器 - 是一组高两层楼的鼓，这套鼓包括利用废物改装成的马林巴琴和澳洲土笛以及不同音调的敲击器。