I designed this support to illuminate the printer bed so it lets you see what and how it is printing.
I used a 12V led strip section, then 6 leds, about 10.5 cm long; I chose the 12V version as I used the socket that is needed to use the laser. But in order to be able to use it I have soldered a laptop power outlet.
On the bed I attached it with a simple double-sided adhesive and to hold the thread I used a simple cable tie strap.
I have also attached the original file in case you want to make any changes.