How to test icons?

I am trying very hard to create a personal icon library for my icon rules. I have a LOT of rules since I am meticulous about my cataloging.

I have had to design some icons, but I never know how they look in my libary until I actually add them to a specific rule, then it becomes a part of the icon libary. I don't want to have to go through all these steps to just see how an icon looks in Calibe

Any suggestions on how to set it up so I can just test icons and see how they look without having to upset my current rules?