Well, my body may always hurt and make noise, but my hearing is still OK, it's my damn eyes the last few years...
Far from serious, I just don't like to have to put on 'my eyes' as I call the 2x magnifiers I dawn to read with, especially when it comes to a big pile of all silver wrenches and sockets scattered about or in a pile on the bench.
Everyone here knows what a pain in the ass it is to have a 'pile of tools' and have to pick up each tool and have to study it to see what size it is.
In my 'still building' posts it is not uncommon to see a build see in different stages in the bay pics with tools on the floor and the ways I have tried to mark wrenches and sockets for a couple of years, my 'final straw' or 'brilliant moment' (only time will tell), is when I came up with this and printed them out.
So close to what is ideal I went ahead and had Industrial Stickers, the outfit that does my KC's Kruisers gas/oil proof engine stickers, make me some numbered peel off sheets of the same stuff for my tools.
Metric sheets from 7-18, fraction sheets from 3/8 to 3/4 by 16ths in another color print to tell the difference.
Pretty cool for us guys that don't want to 'put on their eyes' to see what tool they need don't ya think?