Fun, colorful and often cheap, vintage postcards are a great way to create an art wall on a tiny budget. For the most visual impact, try sticking to a theme, such as beach towns, national parks or cards from a certain era.
Puffin book-cover postcards. Framed and hanging in our family room. I love this feature of our family room. We bought 3 large picture frames and stuck a variety of Puffin postcards of book covers onto the white backing. Simple, cheap but looks fantastic in a family/living/play room.