Ken, so cool! Do you have to protect them for winter where you are?
I consider my air plants
among my house plants. Literally!
T. ionantha on the trunk of this dragon tree (Dracaena marginata.)
The older section that's dying off now, as expected, was the whole plant when I got it. It's making a lot of roots. It's been there for about 4 yrs. I dribble water over it when I'm watering the soil for the tree & other plants about every 2-3 days while outside. While inside for winter, I use a squirt bottle to mist the air plant about as often, 2-3x week.
There's another kind on the trunk of this Ti plant (Cordyline fruticosa.) My MIL found it on the ground in FL & brought it home & gave it to me earlier this year.
Don't have a recent pic of one other one. Will add it soon.