Hi, I found this amazing USB Dust cover made by Klock_Engineering_3D over at https://www.crealitycloud.com/user-profile/6560541617 so check them out and give them a like.
It has a style similar to the K1/K1 Max's door and lid, which makes it astatically pleasing to me.
That said i did find a little issue. The walls that go into the USB socket were on the thin side and could potentially break, in fact it did for me. so I made some changes to accommodate my needs.
First i strengthened the wall by making it full thickness, just like a USB drive would be. Second I shortened down the height so it didn't protrude as much, but with enough room to get a fingernail in behind to remove, if you should need to. Third and last a made an extra version that is a little narrower in length to make it more compact, if that's your thing.
Thank and enjoy!!
Update: Added a model that sits flush with the usb port, with and without Creality logo.