A label maker program for 3.5" floppy disks for the Amiga written
...I can't tell if there are still available today. You can add an image from a selection of images shown here to enhance the overall look of your floppies. Apparently, the program works still nicely inside WinUAE and even the printing works if you setup the printer emulation (I recommend the EpsonQ 48 dot printer).
This program prints a PBM file using a Casio KL-G2 Label Printer connected via USB on Linux. Also supports manual feed/cut and controls most of the printer options.