I use a wireless keyboard that doesn't include caps or numlock indicators, this can get annoying so I needed something to replace that functionality without ditching the wireless keyboard. I used Prusaslicer to heavily modify the Spaceballs winnebago model so that I could fit LEDs into the engine inlets and run wires into the body where a USB keyboard control board is located. The model is a bit rough as I printed with a .6 nozzle, but it works :)