Some time ago, I bought a lot of 200 vintage beach postcards for ten bucks on eBay. Surely I'd come up with a way to upcycle such a find. It came to me in my downstairs guest bath as I found myself staring at a wall of ugly 80s wallpaper that I'd hated since we bought the house.
Lightbulb moment: What if I tore down the paper, painted the wall, and created a collage of the postcards? It wasn't just art, it was built-in entertainment for visitors to the loo.

Vintage postcard wall