I was checking out some computers people have made in the game and thought, "wouldn't it be cool if we could play sounds too?"
That brought me to this idea. An element in the Electronics category. Speaker, or SPKR. It would play a specific tone when sparked (set by it's temp, temp=frequency).
Using this, people could create things from musical devices to general sound response with electronics. Personally, I would love to see what people could make with this, and am really interested to see it appear in the Powder Toy one day.
Specifics:
Speaker (SPKR)
Solid element
Not flammable; is meltable; conducts electricity
If sparked multiple times in sequence, tone will continue to play until sparking has stopped.
Edit: It seems this has already been suggested quite a few times before, my bad. I can't seem to delete my post. Hopefully this provides something extra that warrants it being here, though.