I make my own magnetic storage sheets that fit in a small 7x9.5" binder. I cut cereal boxes or other cardboard into sheets of 6x8.5" and cover them with decorative paper, including reinforcements for the holes. I then get some 4" magnet strips from Michael's that are adhesive on one side and I paint the other side with acrylic paint to go with the patterned paper. I place one strip down on the middle of the sheet and trim the other one in half, then stick it down beside the first strip to make a cross shape. I find this fits almost all of my nesties sets. I had to add some extra magnetic strips for my SU Labels framelits, but that's no problem. I stamp a label shape onto the sheets so I can write down the name and number of each set. So far I've been able to cram 15 sets into one binder. I really like how accessible the sets are, and I can see at a glance which shapes are going to work with whatever image I'm trying to frame. I'll try to take a photo of it and post it in a bit!