mounted staghorn ferns - I've never seen them in a house - always a green house or outside in the south...you need to take them down once a week and water them in the bathtub...let them dry out a few hours and rehang them!
Vertical plants on driftwood! Some ferns cling to trunks of trees in the forest. This is an example how driftwood pieces from the beach were made into mounts for staghorn ferns! Browse driftwood crafts on Completely Coastal: http://www.completely-coastal.com/search/label/Driftwood%20Crafts