Have you considered making a pad out of it with PVA glue?
It would need a card back like you get on standard school writing paper pads and possibly a thin fabric strip to reinforce the spine. Clamp the booklet between two boards (using either metal clamps or those sprung rubber tipped ones), make sure it is squared off. Apply a thin layer of ordinary PVA to the spine, spreading evenly with a finger. Allow to dry completely. Release the clamps, put on the fabric strip, overlapping at the edges and re-clamp between the boards. Apply a second coat of PVA to the spine, soaking the fabric strip. Allow to dry thoroughly. Release the clamps and PVA down the edges of the fabric to the front and back covers. I don't think you can re-clamp it to dry here as it will simply stick to the boards but you may be able to do something with plastic wrap. Perhaps check Google?