JF Ptak Science Books Quick Post
The moveable book (flapbook) has long been interesting to me--unfortunate though that in my own fields they weren't used very often. There are some very notable exceptions--early geometries would occasionally be published with many of the geometric illustrations made to pull out a little with the tug of a string to show you the construction in 3-D. Then of course there are the paper dissection manikins, where you can find nearly-life-sized paper anatomies with hundreds of movable/liftable flaps, and smaller examples of the body and specific organs that can be simple or not simple whatsoever. These were time-intensive efforts, and in their own way they provided a sort of pre-MRI MRI by revealing the various layers of 3-D objects with 2-D tools--and they're beautiful and captivating objects.
(And this example is for sale at the blog bookstore, here.)
The full image, "unmoved":