Summary

movable boxes 25mm high for all small gadgets around your workbench .
make 2 mounts and use a rod diameter 20mm with length of your choice and make as many as you need
and stack them on top of eachother if objects is higher then 25mm make some washer and put in between.. all parts with oz in them are little bigger in the 20mm hole so if they are to tight for your rod choose tthem instead.