I& got many pins in DIY ARTWORK for repurposing old maps. What a great idea. Pick the image that you like best, stencil or trace it on the piece of paper and cover the map. For example, the Eiffel Tower traced over a map of Paris!
Trees painted on a book page. the tree is unpainted, and the "negative space" is what gets colored. OR could carefully cut out negative space on a page or two, making the tree really seem to stand out more.