Roof over your head. Seriously? In Europe if keep it modest you can keep a roof over your head by working in supermarket. I don't think this should be your aim honestly.

Depends where in Europe you live, though. And in recent years, even that is not enough for most countries with a strong Tourists sector, as rent goes up year on year (they increase rent during summer then lower it, but it's still higher than before). That's been going on for at least 15 years in some regions of Croatia. Not to mention everything (except salaries, od course) is being rounded up to Euros, so that's additionallt going to affect Croats.