I did the same as you, and did not manage to keep source code, but I kept binaries at least (https://github.com/thbar/demomaking https://github.com/thbar/demoma

I did the same as you, and did not manage to keep source code, but I kept binaries at least (https://github.com/thbar/demomaking https://github.com/thbar/demomaking) of some demos and games I made. It took a while to find them back on the internet thanks to various archiving folks!