Here's another tool organizer I use in my espresso machine repair shop. Husky makes a “deep” socket, more or less it is bottomless. I designed this to fit just the MM's and the extension. It features 2 hooks (no support needed!) to display or hang your special wrench. Don't want to go and lose that thing.
I made a smaller version as a test with some cheapy clear PLA and it seems like it will hold up excellent.
It's spaced better for the MM socks.
The author marked this model as their own original creation.