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It's amazing how many ways you can use completed coloring pages when you stop and think about it. I came across this empty box with a clear window...
... and realized that I could add a completed coloring page and use it to hold a gift. No wrapping paper required! I cut a completed coloring page from The Art of Coloring Kaleidoscopes to fit the opening. It looked OK, but the colors weren't quite right.
I painted the box white and it looked so much better.
You could do this with literally any coloring book and any box, tin, or pouch with a clear window. Get those completed coloring pages out of the book and out where they can be admired!