Using my favourite controller shell I made a little modification from its standard functionality! :) The client wanted a functional prototype of a gaming speaker, i.e. a self contained speaker unit that looks like a game device. For the prototype brief it was OK for it not to be Bluetooth as it was an extremely short lead time (3 hours notice!). I made a couple of units - the second unit is always quicker after you make the first!
I installed a Baby BOOMER! Lithium Cell, power switch and speakers into the unit with a standard headphone Jack.
The client was very pleased. I have a spare one of these that will be either in the shop or given away as a prize to Patreon supporters.