Air plants might look fake, but they're not. Their genus is Tillandsia, and their family the Bromeliad. They can be grown indoors or out, prefer cool nighttime temps and bright filtered light. They also do well in artificial light as well; florescent is best. Tillandsia grown indoors prefer to be thoroughly wetted 2 to 3 times a week, whereas if they're grown outdoors they may never need watering. For food, an air plant will do just fine with a Bromeliad fertilizer (17-8-22) twice a month. If all these 'rules' sound stringent, they aren't. Tillandsia are incredibly hardy, which is one reason why so many people think they're not real!
Now, how to display them.... Apartment Therapy put together a gallery of some great ideas. Although, according to my source, Air Plant City, Tillandsia don't like to be in containers that hold water. That being said, let's take a peek, shall we?