Caravan sounds like a good idea, a friend of mine borrowed his parents for a while when he was at Oxford. I have no idea what site he stayed at. Most caravans seem to spend the majoroty of their lives parked on people's drives (or parked on the M6
), maybe you know someone can borrow from?! A tent could get a bit tedious once the novelty wears off, you can guarantee that the night before a skills test it will throw down with rain so you can't get any sleep!