I’m sure you’ve seen the plethora of adult coloring books available in stores recently. Personally, I’m partial to this one (my husband actually bought it for me for Christmas) and this one, since I love Harry Potter.
How is this library related? I came across this article about New York Public Libraries and their coloring club. I always have coloring sheets available for kids in the children’s area and I provide adult coloring pages, but now I’m inspired to run an actual club.