I designed a LED-Ring-Holder for my ANET A8. It is mounted via the single screw which fixes the extruder to the extruder-slide thing (no idea how it is called).
It is for 60mm 12V LED-Rings like this one:
2x 60mm LED Ring 12V
I've designed two versions, one for a ring width of 5mm (i've printed a previous version of this one for me) and one with 8mm width.
If the ring does not fit in the holder, try to sand the three noses/hooks a bit.
Note: You have to remove the termistor to install the holder & LED-Ring.
** Sorry for my english ;-)