The MMU2S upgrade offers two problems for LED lighting, the extruder mods are tall so it must have Z clearance and the MMU2S mounts on the back of the frame so a light must be on the front.

This simple LED light frame is tall enough to clear the extruder and short enough to clear the PTFE feed tube.

For MK3 printers (24V) use these LED strips. Cut two sections and extend the wires to the Prusa power supply. The light will come on with the printer.
https://www.amazon.com/gp/product/B073QNMS5J/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

Remixed from https://www.thingiverse.com/thing:3034514 by nrp

Print instructions

.2mm in PLA with shade on the platform and legs in the air. Print with supports for the clips.