This socket holder is similar to what you can find online, but it's easy to print.

This is a work in progress.

Print 2 end caps, as many socket holders as you need and then scale and print the bar vertically.

Bar size = 10 (length the end caps will use) + quantity of socket holders x 22.

Scale the bar to the total size required and print vertically.  Print hot and use a semi-flexible material like petg etc.

The first couple of uses will be harder than the rest to insert and remove a socket.