This is a simple way to light up your print area that cost under 20 bucks that is non-permanent, has modular light output, and can be reused for other things when needed.
Print 2 of these adapters and twist into the top bar of your printer. Clip in the Anker (or simular) 4x USB HUB with your choice of 1 to 4 USB LEDs depending on how much light you need.
I used a USB extension cable from the hub right into my Raspberry Pi but you can use a buck/step-down converter and hardwire this right from your power supply.
Extension: https://amzn.to/2Co6dk6 or https://www.ebay.com/itm/USB-2-0-Mini-A-Male-to-Female-Extension-Cable-Cord-A-A-M-F-3-FT-3-2-000-SOLD/311989252345?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
Enjoy and post your makes!
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Update 3: I have now gone down to 2 LEDs. They are just too bright at night for my camera! Two seems to be the right number.
Update 2: I have had these LEDs (3x) on for a week straight and they are warm to the touch but nothing that will be an issue.
Update 1: I had to go down to 3 LEDs because it was too bright for my camera at night. 2 or 3 LEDs seems to be the perfect amount. Added photos.