This is a small numbered tag that can be used as indicators for various things, for example key rings or marking transitions in knitting.  I originally printed as all black in PETG (since they were going to be used in yarn dyeing and need to stand up to boiling water) but you can easily print in PLA and/or add a color change for the numbers as shown in the images above.  These are also designed with a sturdy 1.4mm backing so they won't bend easily.

Included are .3mf files for numbers 1-50 and 51-100 (with color change), and a Blender file which includes the base mesh model and a script to auto-generate and save individual .stl files for each number.  You can change the range of numbers in the script (line 14), or use a list of strings (text) instead.  Of course, you'll likely need to modify the geometry of the tag for longer numbers/text.