For photo wall art, you can get creative by exploring what has never been done before. But you have to start somewhere. Even the most accomplished artists begin their career by being copycats.
On a street somewhere, someone has painted an alley wall with a rather colorful and giant set of wings. And before you know it, young people are flocking to the spot to get their selfies taken.
Standing between two giant wings, each person can be photographed to look like an angel in flight. Social media pages are eternally blessed. The same goes for towns where gentrification has crept up.
Sooner or later, you have town elders clamoring for giant murals dramatizing the old ways and traditions. This is the way of the world. For an artist like you, the streets are now the playground for your imagination. Try mixing photography with painting to see what you come up with.