Alibaba.com offers 1,397 electronic toys mechanisms products. A wide variety of electronic toys mechanisms options are available to you, such as material, type. ... Mechanism Toys Music Box Mechanism Small Hand Crank Music Box Mechanism Custom Tune For Toys. US $4.60-$5.35 / Piece. 100 Pieces (Min Order) CN Panan Shunxin Arts & Crafts Factory.