I noticed today that I've never added anything to #archiveorg. So I've added my first item today: A floppy disk labeled Check Up 2000.
https://archive.org/details/prof.-morse-check-up-2000-deutsch
It's supposed to check whether your DOS computer can deal with the millennium change and prepare it somehow? I don't know how it's supposed to work. But on my DOS Box on Linux it says it's 43 hours and 37 minutes into the day right now and I can't install it.