Blackwrap is a good choice. It's a thick aluminum foil that's flat black, used in lighting. You can get it through stores that carry grip gear, such as setshop. There's apparently something similar called whitewrap, though I've never found that available anywhere. Or alternately, spray-glue two pieces of regular foil together and then sprayglue printed paper on both sides of that (you'd glue on the paper the same way with blackwrap). I've also heard of people using pie tins - the disposable ones that are basically extra-thick foil.
I second what Mike said. Though hard to see, the page turning on the clip below was done using black wrap that I painted with white Krylon. The pages are about 1.5" on a side.
YouTube took this thing I shot on 1s and made it look like it was shot on 3s, but you get the idea:
Late to the party on this one guys,
but I did something like this a few years ago and used dolls house lead (real lead but very thin) the pages were 4x3 inches the lead was very maleable and i glued inkjet printed book pages to it with spraymount it held up well. the item Strider mentions 'blackwrap' works well. To age the paper use walnut ink or sepia acrylic ink it makes the paper look as if it slightly old and worn.