I'm a great believer that inspiration can be found wherever you are. I saw this small imperfection in my floorboards and thought "I wonder what that could be made into". So I sketched it out using charcoal pencil, then turned it around and I saw a little person taking a dip in a pond. 10 minutes later, there's two of them, having a moonlit dip in a lake!
2. Turn around - what do you see?
3. Complete the scene
You can do this with anything - holes in the pavement, cracks in the wall, peeling paint, ink blotches, paint blobs...