My parents have accumulated a pile of keys over the decades and I wanted to help them organize.
I put together a small 1x3 cm tag that can be quickly printed and attached to key rings and printed off the tags I needed. I also made a version with an inset writable surface for labeling with a Sharpie/paint marker.
I also created mini tags for single letter tagging.
The author marked this model as their own original creation.