I love my LED setup and the AMS Riser V2 by maCyo42 but found that the LEDs made seeing anything on the camera nearly impossible at times (even at 1% brightness). By adding this diffuser I now get ample light without blowing out my camera (even at 100% brightness).
For this you'll need to print the following parts: (PETG Recommended)
The back and front pieces are the same size but the back contains a cutout for the LED wires. When installing take careful note of the orientation of the straight pieces, one edge of them are intentionally not straight to allow it to match up to the corner pieces. Simply install the diffusers using the existing ziptie holes on the riser.
I recommend printing these upright as this will help make the curved surfaces more consistent. I intentionally printed my diffusers to be slightly opaque as I wanted to make sure it was blocking and diffusing some light. If you would like to make your parts more transparent I found this article on the Bambu Labs Wiki to be useful.