This is a case for the Duckboard. It will fit all versions. Print the top with or without supports, but they aren't required. The bottom will require supports. The case is designed to incorporate all of the plates with the duck visible on the bottom. The RGB lighting will peak out of the bottom. The M2 screws and standoffs that came with the Duckboard should be long enough to use with this case, with the exception of the angled base. You'll need longer screws for the back two holes.
UPDATE: The design has been updated to version 9. Notable changes are:
M2 Inserts: https://www.amazon.com/gp/product/B08ZJ6F39F/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
M3 Inserts:
https://www.amazon.com/dp/B07LBRB5HL?psc=1&ref=ppx_yo2_dt_b_product_details
The author marked this model as their own original creation.