If you're not expecting any real mail why not get a PO box that forwards to an actual box in a store? You can check it from time to time if something might come through. If you do move, just ask them to change the store it gets forwarded to.
I realised after I posted that I could have explained this better.
To me at least, working to someone else's plan gives me a 'better' experience for future work. This way I'm not likely to artificially limit myself and drop features here & there because I don't feel like doing them. It will also give me more satisfaction to see a real useful app out there, than a flashy toy I might create to show off. I have some ideas of my own but that's all they are at the moment. And finally, someone else will get something useful out of it too.
And I do have a published app on the app store (should have mentioned that too!). It's an early experiment with PhoneGap and so not the best example of my skills however.