I have all my NES games on a bookshelf, in stacks of 15. Any higher and they start to tip. They are all in the black plastic sleeves, and that acts as sort of an organizer. I can pull whatever game I want out and the rest stay in place. You just leave the sleeve in place. Not the most elegant looking setup, but it's cheap and they display nicely. The hard part for me was finding enough sleeves.