I made these letter cards to work in conjunction with Making Sense of Phonics lessons. What I did to keep them easily on hand for the kids was make a Word Work Folder for each student. I put 4 pages of baseball card pockets in each folder, and had the letters all sorted, one letter per pocket. That way when we were working on a lesson, they could easily get the letters they needed. This could also be used during independent word work time.