Hanging 6-Bay HDD Cage (Mounts to 140mm or 120mm fan bracket)
Bracket was used in this video here: https://www.youtube.com/watch?v=J0ibj-7mhQs
Print the base and 2 brackets, and then attach using standard PC fan screws (M5 x 10)
You can also print the LED version which has a tunnel for wires and to cutouts for LED accents.