Ask HN: Do u leave Easter egg in your personal project?

No. With the limited time I have to spend on personal projects I would rather add new features or improve existing ones.

I've also experienced "fun" code unexpectedly showing in production at companies, leading to embarrassing situations for the developers who snuck it in.

When I was writing my thesis we were not allowed to have a thank you note at the beginning so I've put a thank you note in one of the screenshots.

Yes! If for no one else, I want the ability to hit a specific key sequence to show some meme.

Yes, in my game during December all NPCs spawn with christmas hats.

Nope. Unprofessional.