We've gotten really into plants in my house, and as a side effect the whole place is lit up like a christmas tree with full-spectrum light. I've never noticeably suffered from SAD, but I do wonder what the benefits of such a change would be to the typical terminally-inside HackerNews denizen. Anecdotally, it seems to help! The rooms do feel somehow more "energetic", which only feels like 75% placebo effect