My eyes aren't that great but it might have helped if I'd clicked on the photo to enlarge it.
I see now that the large Bromeliad in Elaine's photo is not the Tillandsia I was thinking of. Below are my Tillandsia utriculata plants.
Planted in the cage of an old suet feeder February 2013, I just stuffed spanish moss (T. usenoides) into the cage and stuck the little Tilly's in the openings.
Same plants summer September, 2014 and ................... August, 2015 (can't even really see the suet feeder anymore. I'm not sure how many plants are still living in there, may be only one but I'll go out and check tomorrow.
Another one that I stuck in the crook of the Bottlebrush tree in 2014 has really grown too and seems quite happy. I just point the hose in their direction when I'm watering container plants or else they get water when it rains. If we have any extended cold temps this winter, they may not survive but I don't want to bring them in because they are full of ants!