Contact a local shop that sells wallpaper as they are often happy to give sample books away at the end of the season (usually twice a year). Use the paper to cover boxes, as backing for displays and there's a whole lot of scope for art activities throughout the year..
I also like to use older books. as altered journals in my creative arts groups. Using matte medium and gesso to prepare the pages, it gives a new surface for creative art, and journaling. This private book then looks like any other book on their bookshelf and is "hidden" from view from others.
Use the paper to cover boxes, as backing for displays and there's a whole lot of scope for art activities throughout the year..