I really regret not archiving my projects as a kid. I didn't care to save much of anything back then so they got lost to various HDD crashes and migrations to other systems.

I started programming at 11 and don't have anything I made before I was 19. Mostly video games in C++ and small PHP projects I did for money in high school. It's fun looking back at what I have so I really wish I had the stuff from way back in the day.

My oldest program of any significance, a console based poker game, was lost with Planet Source Code and isn't in any of the publicly available archives. I started looking for it maybe 6 months after the site went down.