Find this https://www.thingiverse.com/thing:2806071, but my diy kit differs little so i desided to design one for it. I leave room for battery pack, but i have prototype for smaller case. I add it when it's finished.

Case fits to this diy kit:
https://www.aliexpress.com/item/1005001771617527.html

Creality

Ender 3

No

0.2

20-30%

Some finishing needed, as usual...drill and sandpaper should be enough.
Also need 7pcs 3mm screws to hold parts together.