To create a “soap machine”, you will need two engines to rotate the disc with holes and a small fan that fills the bubbles with air. The easiest way is to use a CD disc as a blowing device, the number and diameter of holes in which will directly affect the number and size of blisters being released.
The bathtub for the soap solution can be an aluminum can or a deodorant can. After final assembly and testing, the bubble generator is not bad to design in bright colors to give it a festive look.