I used to use binders but wanted something easier.
Bought a crate file folder holder. It works great. Just added file folders and labels. Now it is easy to file all sorts of patterns.
Most are printouts from the web, which is perfect for folders. But can file odd size patterns that are booklets etc.
You can put your patterns in sheet protecters also then file.
I love this system and it already holds over 6 large binders worth of patterns and special instructions. Still have room for more.