One discussion I follow is Sewing Down Under and here I found a discussion about storage so thought I would share my system.
I store patterns in white boxes purchased from Officeworks. They are philosophy brand and fit the patterns lying down - not ideal as you need to pull the patterns out to flick through but I like the look of the boxes. If anyone knows a box that looks good and can store the patterns standing up so they can be flicked through. I tend to put summer / spring patterns together and autumn / winter ones together.
For larger patterns - think Jalie, StyleArc etc - I use lever-arch files with plastic envelopes (again from officeworks - love that store). These envelopes are also great for using once a pattern is cut. They also fit some of those pattern books.