I liked some of the existing light bars for the x-axis gantry mount, but they wouldn't fit my Ender 3v2 for a longer light bar. I didn't want it sitting up at the top of the printer, I preferred to have the light down at the print head.
This can be mounted to the 80/20 bars of the x-axis gantry on any 3d printer, if you have the extrusion you can screw into extrusion nuts, otherwise if you have a gantry that has a flat surface on the sides it's light enough that a good quality double sided tape will hold it pretty secure on the back side, where it wont interfere with the hot end.
Printed in PLA, 25% infill but probably don't need that high.
I've used a 23cm long 24V light bar from Amazon https://www.amazon.com.au/gp/product/B099PSL6RJ/ that gives off a very nice clean light, no flickering, and has an inline switch, so was very easy to wire into the spare points on the power supply of the creality printers so it comes on when the printer is turned on, but has the inline switch if you want to manually turn it off.