I don't want to kill the party, but a lot of these 'tactics' are a step too far. I would be furious if someone stole my food or belongings just to save a few £s. As I'm the first to save, cut spending and cut waste, I wouldn't have a problem with money-saving tactics if they just affect you, but stealing food from buffets or pens is irresponsible. Just buy your own and stop being a cheap skate. I don't understand what makes some of you so important? You may laugh now and say I'm overreacting but someone has to buy the buffet food, for a scruffy student to come along and steal it is frustrating to say the least, what would happen if everyone did it? There'd be none left.
The worst thing I've done was eat biscuits for dinner because I couldn't be bothered to go out, still that's sheer laziness and my problem.