Summary

I've added an OLED display to my PiKVM v2, on Zero 2 W, build so that I could see the current IP and status. There are several How To guides online for both generic Raspbian use:

https://www.raspberrypi-spy.co.uk/2014/11/enabling-the-i2c-interface-on-the-raspberry-pi/
https://www.raspberrypi-spy.co.uk/2018/04/i2c-oled-display-module-with-raspberry-pi/

and PiKVM use:

https://windix.medium.com/pikvm-with-raspberry-pi-zero-2-w-b5f9d4a6ff32
https://github.com/pikvm/pikvm/issues/797

I got the OLED on Amazon for around $6 here: https://a.co/d/dr383HZ

I don't have any advice for screws to use. For the original case and lid, I used some tiny hinge screws I had on-hand. For the OLED display, I used some M2x6 machine screws from an old laptop case. Really, finding screws for this build is the hardest part.