How do you store printed and stickered Lego parts?

Hey fellow storage nerds,

Over the years I’ve built up a solid Lego collection and a sorting system that works well for me. However, I still haven’t figured out a good way to store all my printed and stickered parts. Here’s a look at what I’m working with: Imgur link

Curious to hear how others are handling this.
Do you keep them separate, sort by type, theme, or something else?