Icon Selection Standalone
There is a panel for the viewing of the button and then an actual window with which it is set to, If the button's image has already been used, it prevents further use by disabling your ability to lock in your choice. However a second set of the same conditions further prevents bugs.
You can re-size these windows to your hearts content and put them where you'd like them.
There are multiple uses, the two most obvious being:
1. Hero Icons for Hero Selection 2. Using the function included to figure out the string path of the image input.
Pretty self explanatory library. Poke around and see what you find!