The KIM-1 came from MOS Technology and Commodore without a case or power supply. So you eithr build your own housing or looked at what other firms sold for the KIM-1.
There was a lot on offer, mostly targeted at system expansion with large cases.

One of the cases you saw quite often was this case. It came with one of my KIM-1’s. Small, simple and effective

A perfect solution for an unexpanded KIM-1. Quite popular in education. Add a power supply and you can start using it without exposing the electronics. The LED display was behind a red plexiglas cover, so that improves readability.