Summary

I wanted to install a 90mm led ring under the hotend cover and the two "things" found here had issues for me (one excessively complicate, the other too rough). Finally I decided to modify a nice hotend cover to add a base for the led ring.

Original hotend cover: https://www.thingiverse.com/thing:2457516

The base can be printed as a separate part and fixed with the (coolers) screws or can be printed complete with the hotend cover as a single part.

Led ring used:
https://www.amazon.de/gp/product/B07MHHMJH9/ref=ppx_yo_dt_b_asin_image_o00_s00?ie=UTF8&psc=1

Mention: the base will not directly fit on the original sheet metal Anycubic i3/MegaS hotend cover, as the screws are horizontally displaced cca 2mm. But with elongated holes it will work.