I like growing epiphytes because they are cool. I like my Myrmecophelia tibicinis a lot because it is also an ant plant....the name 'Myrmecophelia' refers to ants. Most orchids are of course epiphytes although some are lithophytes or terrestrials.
I have another cool plant that has this same feature (it will house ants), the epiphytic Hydnophytum formicarium. This is called the 'small form'. These are native to Singapore, where they are critically endangered, but fortunately the have been cultivated elsewhere so they are not in entire danger of going extinct. And they have cool little teensy flowers right now!