Another favorite thing of mine to doodle is buildings. Apparently, recently I've limited that to doodles of our house. At least, the outside of it.
We've been considering putting in a pool, so the real focus of many drawings of the house has been pool options. Here's one with the pool on the left side of the yard, with a hot tub on the left bottom edge and a fountain on the left top edge.
A circular design I considered, with a patio on the left, a hot tub top center, and the pool area on the right.