Look at a design thought of by Ren Peng's "SMARTBOX"-"MUSICBOX"
With the addition of a safer and more friendly silicone coat (I don't know how to realize it), the little song just created will be played when put together ~
There is a number plate behind it.

Why put these two together?
Maybe they are both small squares ~
I hope I can improve my level and do more designs with temperature and fun.