Share and discuss the book Alien Bob with your child.
Explain that Alien Bob needs to find furniture for all of the houses that he has made. He is going to need some help to know which furniture to use.
Get your child to do some mark making to label the things in your house that Alien Bob should put in his houses.
It does not matter if they do not spell them correctly or use recognisable letters-the main thing is that they can tell you what their marks say.