@Paradox yeah, they're a nice plant feature
lots of atmosphere can be added to a place with some vines
like, think of a bare trellis, then one with vines.. i'll bet you'd prefer the vine covered option on a summer day
even better if the vines produce fruit, or really just flowers
mycelium is also quite lovely, though, i can't say i know enough about mushrooms to say what kind i'd like to be