Definitely explore the idea of "home" for different individuals. Possibly a criminal calls their jail cell home because that's where they've been all their life, that they wouldn't want to live in the foreign outside world. Or home is not home without a loved one, that one's home is the loving arms of their mother and not merely the concrete idea of a house with a place to sleep. Maybe a business man feels that their workplace is home rather than their own house with their family. Or even a homeless person who only feels at home when they're on heroin.
Also look at those who may not have a home, how do you think they feel? Whether they are rich or poor, without a place to call "home", how can they have any drive to truly live a life? And of course use your own experiences and emotions about your own idea of "home". What sort of feelings make you feel at home? Use all those ideas to create possibilities on what elements or symbols you will use in your work to represent it.
The theme of home is a wonderful conception, good luck ^_^