Sound

This little thing is a sound module for a model train. The train is 1cm wide, and it must fit inside it. For comparison I have added an (already smaller) staple. It liked the force of attraction of the mini-loudspeaker (it has a magnet inside).
Added to the train it will be possible to virtually turn on the engine or use the horn.
Thanks to JDO for hosting the Tiny Tuesday challenge.

PS: If you fancy hosting - please contact me to arrange.