You have a sitting-room journey already.
You could try your next room. How about 10 stages in the kitchen? There is the freezer, then the micro-wave, then the kettle and so on. How about 10 stages in the bed-room, front-garden and also the back-garden.
Start with places / locations that you know.
At home, your work-place, your school. The way to work. There is the old tree, then the traffic-light, then the unusual looking house, and so on.