Another idea: My uncle lived in France for a while, and he collected miniatures of the famous buildings there. I don’t know if you can buy these on ebay, I’ve never looked, but I always admired his collection.
Wherever you go, the gift shop will have little replicas that fit in the palm of your hand, Sacre Coeur, Notre Dame, the Louvre, Napoleon’s Tomb, Arc de Triomphe, the Hotel De Ville, there are a million other places. I never got any because I went for the scarves and dresses, but some people find them very charming.