Depending on the period of the year, I can maintain plant beings outside, mostly flowers, generally a good chunk of them varieties acomodated to the mountainous environnement I'm in.
Right now, got only 2-3 left inside. An aging Ficus is the standing out piece. I take it in the shower regularly (once a month). The rest is about intimacy, fog and shallow breathing. No seriously, it's good for them by removing dust and allows for better photosynthesis. It shows they adore the care.