Our social studies teacher in fourth grade (Mrs. Amy Edwards - http://www.mrsedwardsclass.com/) is trying notebooking in Social Studies this year and is enjoying it. We share ideas back and forth and this is one that she came up with for the organization of the BINGO markers that I really thought was good and will be doing next week.
She got the the snack sized ziplock bags and taped a corner of the bag to reinforce it. She snipped off a small part of the same corner to allow air to escape out (the tape reinforced the corners so the bag would not tear up the seam).
She taped the bag to the back inside cover of the notebook and put the bingo markers inside it.
Each child now has their own set of BINGO markers, which saves time when setting up the game, reduces student blowing air into the bags and trying to pop them, and makes students more responsible for keeping their BINGO markers off the floor, etc.