I keep a dish/tub/bin full of my Scholastic Book Club resources. Whenever I get something that is related to book clubs, I toss it into the dish/tub/bin.
At the end of August, before school begins, I create the monthly “due back by” labels. I keep these sheets in the plastic Ziploc baggie, along with the current and past months order forms, teacher inserts, coupons, student order form envelopes, bills, etc. A stapler, stapler remover, and extra staples are stored in the tub as well. That way, if I need to work on the book club orders at home, I can easily just take the whole thing with me after school without thinking about what tools/supplies I will need to create student packets or to order online.