This OpenScad routine will create a socket organizer tray for the socket sizes and labels that you provide.  Use a caliper to measure the diameter and height of your sockets.  By default a slot for a magnet is created, which can be customized as documented in the file. 
 

Update 12/24/2023

In the previous version I used SansFranctionsDiagonal to represent fractions, but this is font is limited (no 64ths) and required you to know the special characters.  A better way to represent fractions is to use Times or Arial fonts (and probably others) with the "⁄" character (e.g. "63⁄64")  - note that it will NOT work with the "/" character!