First, I laid all the books with companion plans on a table. Doing this helped me see how many sets I had for each season. As you can see, my fall and winter books filled the table! I only have a few books for spring and summer. I also made sure that the units fit into a hanging file.
Next, I purchased two large bins and one smaller.
I did keep one large book bin filled with giant Ziploc bags and manipulatives for my private preschool and kindergarten students tucked neatly into the closet. Sometime in the near future, I will publish my preschool literacy summary that talks about the contents in this bin.