After attempting to manually level my Z Axis, I found that it was still slightly uneven. So I decided to make rail stands that I can use to ensure that my Z Axis is aligned properly with printer base. I opted to use this calibration cube since it had a great design.

This can also double as a calibration cube.

And they are stackable so that you can get the height you need to rest your Z Axis. The top notches slide into the rail to hold it in place.