In my case, I noticed we were going for a forest theme for the world, and I thought "wouldn't it be wierd to be walking through a lovely forest, and then you look over to one of them and there's a person in there?
In the end, they only used the five trees made instead of scattering them around the forest, but they're one of the first things you "see" when you jump in world. If you're in #resonite, check out "Creator Jam 281 - Silent Spring." Say "Hi" to the trees. The don't get much company....
Despite opening it up for folks to be trees, only one person took me up on the offer, and so we have a dragon tree as well. A lot of people seemed to like the concept, though, and through both building sessions (I only go to the first, but watch the second), it had a lot of people talking. Really felt part of the jam, and proud of my work.