I have a lot of loose socket sets; metric, imperial, and spark plugs. A organizer when I have so many duplicates seemed a pain, so I made some basic trays. Each one is labeled (painted the words on mine) and finger swells on the sides/front to take them in an out of a drawer easily.

Nothing fancy, highly functional. They measure 9inches in length, and can be scaled to fit your drawers. Warning, scaling the width or height could make it too thin to fit sockets.