It always impresses me in a game when an NPC reacts to something that I didn’t expect them to care about. I’m not a programmer, but to me this looks like a simple way to make the world feel alive and give the player a “Whoa, cool” moment. So I’d like to get a list going of little things Frogatto can do to elicit a reaction from stationary NPC’s.
For example, I think this guy should get mad if you move his boxes around. He should say something like “Hey! Don’t mess with those! I had to climb my stove and stand on my table to get those up there!”