This is a prototype stomp box that  i designed some time ago. At it heart is the BTSE-16FX Accutronics brick.  Unfortunately Accutronics discontinued the 16FX so I decided not to pursue this as a product.

I used an Arduino and some coding to drive the 16x2 LCD display and select the correct preprogramed effects. The component board was etched using ferric chloride, and the diecast box was cut then sprayed and a decal  applied. I managed to neatly stack and fit the models in to the box. There are 16 preprogramed effects  of which I custom named.  See YouTube Link for sound examples.