Here is a list of recommended supplies to make the books in It's A Cinch :
4 pcs of 12x12 chipboard
4 12" pcs of cinch coils (3/4" used in class, but this will be dependent on your project)
1 pc of 12x12 Plastic Paper
12x12 Classic Heidi Paper (Heidi used 2 1/2 packages of paper throughout all 4 projects. The number of papers will depend on how many pages you want to put in your book.