I recently purged my curriculum materials and got rid of anything I hadn't used in the past 2 years. I also scanned all the ideas I'd clipped out of various places over the years.
Now I have 1 big plastic tote with "3D" stuff (flannel board, magnet board, patterning, various manipulative games, etc) and 1 file box with "flat" stuff (file folder games, tracing sheets, matching games, etc).Both are sorted into Spring, Summer, Fall, Winter & General.
I kept a few favorite curriculum idea books but most of that stuff is on my computer.