I agree with Jason here. If I was climbing Everest, or even going out for more than say 3 days, then my gear choices would be different to an overnighter. A plastic spoon and a disposable cup would be perfect for an overnighter. Maybe even two nights, if you are not careful with your gear. If the spoon breaks, so what, you can survive for a night or two. If you don't like the styrofoam cup, then replace it with one of those insulated paper ones. If most beginners start out with overnighters, then why would it be bad to suggest a cheap, light alternative so they can just get out and try it?