I often have a lot of postage stamp nodes in my scripts to keep things tidy.  But there are many times when I am on a Read node and want to see what it's connected to.  This script allows you to use a hot key (F4) to quickly switch all PostageStamp nodes' hide_input to False if they are True.  Hit the key again and it does the reverse, hiding all the PostageStamp inputs.

Add this to your menu.py

import PostageStampSwitcher

nuke.menu('Nuke').addCommand('Scripts/PostageStampSwitcher', 'PostageStampSwitcher.PostageStampSwitcher()', 'F4')