Here's a picture of how I use them. I am super anal, so I cut larger bobbin cards out of poster board (or soda boxes, or cereal boxes) that fit the pockets perfectly. You can use store-bought floss bobbins, but they don't lay as flat.
I have 16 pages to give; that would be enough to hold 320 bobbins. I'd like to give them to whoever wants to use them; no charge or swap needed. I was going to donate them to the SS Vault, but it's a weirdly specific thing that not necessarily everyone would want, so they'll go to the first person who speaks up. If this system looks like something you'd like to try, let me know and I'll ship em to you! (US only? probably wouldn't be worth the shipping to send it internationally).