I can imagine orchids wouldn't be easy but worth a try, because they are pretty. I've tried bromeliads but I'm never successful with those and there appearance is a bit too artificial for my liking. lichens mosses sound interesting, maybe lichens mosses could be grown at the base of pothos plant pots or something. calathea plants sound interesting maybe I can try one out and see how it does. Heliconia looks like it would require lots of light. Ferns never work out for me. All very interesting tho. It be nice if orchids could work.
