I used to have a label system called Neato, which provided round CD labels you could make on a printer, along with a tool to press them accurately onto the non-recording side of a CD-R. There were even transparent labels, so the resulting disk looked like a commercially produced disk.

Sadly https://www.neatolabels.com/collections/cd-dvd-labels

I had one of these as well. It was pretty useful in the days when my HHD was 20GB and regularly filled up.