After not finding anything here that i like, i designed a label holder myself.
After printing you can drill holes of your choice, as I did (see pictures), or glue them on.
I printed the Labels on normal paper and put some plastic film (0.3mm thick) in front of it to protect it.
To the print settings:
have fun printing.
beschriftungshalter_ohne_bohrung.stl | 42.5KB |