Bookshelf Alignment Guide

This is the bookish accessory that you didn't know you need!

I didn't even know that something like this existed and I am so happy that I stumbled across it. It perfectly lines up your books so your bookcases get to look so fresh all the time with minimal effort. Just remember that when you use this, you need to put the books and properly first by pushing them back into another then use this tool and adjust the splines into alignment.