A hard copy of each center pack I make goes into a file folder.
This contains all the directions, hard copies and worksheets
The game pieces go into ziploc baggies sorted by game
Then, both the file and the ziplocs go into a hanging pocket file. I love the pocket ones because nothing falls out the sides. They can be a little pricy so I try to catch them on sale or add them onto my supply orders. If you don't mind paying full price you can get them here.