I had a huge highlight in my Skyrim gameplay the other day. I had built and planted out a greenhouse for the first time recently, left for a while and then swung by to check on things. I'd heard there would be butterflies in there, but gosh- I had a flashback to the amazing Butterfly Conservatory at the AMNH in NYC! I walked around oohing and ahhing a long time, then caught them all.
Show over, I went off to putter about the trophy room and after a while I hear this whirring... a torchbug? Now it's night and the greenhouse is awesomely filled with glowing luna moths and torchbugs. Perfect. Thanks to whoever thought to add this little touch!
(And thanks for that bird nest too, although I can't figure out how to harvest it yet.)