Imagine you're describing your home to a blind person.
You have to describe in (meticulous) detail everything about your house to your partner, s/he DRAWS IT. (Then it is the next person's turn).
(TIP: It is useful to allow the speaker to see the listeners' pictures because it jolts him/her into realising east has been confused with west, right with left, etc. The drawing element is a nice personal touch.) Spin off W: they can exchange pictures and write out their descriptions.)