I really liked the idea from Boogie for screw measuring/sorting helper but decided to design my own with some of his approach in mind.
Little printing tip for anyone - just print the two top layers or the 3rd layer from top different colour from the rest and you've got coloured letters. (Use filament change or even pausing the print and manually changing the filament will work.)
FEATURES
Note: This is reupload of my original design from Printables.