Whip together a gallery wall in no time with decorative objects. The trick? Be sure they share a common denominator, like the circular shapes here. White paint highlights the intricate detailing on a cast-iron register grate, while a gilded-metal picture frame is backed with pink string, woven spiderweb-style, to support decorative cards. A faded painting -- a $4 flea find -- comes to life thanks to paint-pen-embellished forest features.