Color coding sewing machine needles
I recently purchased some new sewing machine needles in packages of 100 because it was more economical. With the size stamped on the needle and my eyesight fading over the years, it has been getting harder and harder to read the sizes. I decided that color coding the needles was in order so that it was easier to find the correct size at a glance. I thought about permanent markers, but some do actually rub off the metal. My solution was nail polish. On each needle where it tapers from the flat back to the needle, I painted a thin strip of color. For example, I am using orange for size 14, green for size 12, and purple for size 11.
Just a little tip that I thought somebody else might be able to use.