So called “adult” colouring books are quite popular these days. Mandalas are very common, and let you colour in a beautiful design pattern. It seems that as these sorts of colouring books have come to the market, it has also improved the kids colouring books as well. A good example of that is the Colour Me Canada book by Scholastic. I can’t remember what store I saw it in, but I took these pictures.
There is a nice drawing of Niagara Falls to colour in.