Guys, I am sooooo happy!
I've helped my dad cleaning up the attic of my parents' house and I could not believe my eyes when I found this:
There are a lot of classic games in there, but the most important discs are the ones shown above: My save discs! I really hope that there's still data available on those. They contain all of my graphics and sound works from back then. I am so happy to have re-discovered my old floppy discs.