At first I did a LED light bar on the top but it wasn't bright enough for the Pi Camera to see the printers clearly. So my Nephew Max suggested I grab a pair of these LED spotlight (jewerly) lights. They come in a set from Amazon for $11.00. So I created an enclosure for the lights that bolts into the channel on the top of the printer. Attached via M5-8 screws and M5-T-slot Nuts.

I designed the spotlight holder with cable management where the wires come up and thru to the back and into a cable management tube. You can then take the wires and tuck them into the channel. I used black shrink tubing with the wires.

Link for the Amazon LED spotlights lights below (130 lumens each)

https://www.amazon.com/gp/product/B08GQP2BTZ/ref=ppx_yo_dt_b_asin_image_o02_s00?ie=UTF8&psc=1