I know this is controversial, but I still love SQLite's old code of conduct (now 'code of ethics'[1]). Its based on some old religious text. If you skip the religious bits, the rest is extremely wholesome. I much prefer it over most projects' CoCs - I've never seen much benefit in spending a lot of words to say "please be civil".
> Be a help in times of trouble.
> Do not return evil for evil.
I will try, for you SQLite! :D
[1] https://sqlite.org/codeofethics.html