Cheers guys We were given a science project to preserve the following using only household items for 5 dats...Chemicals may not be used as well as any external power source like an outlet: Bread Milk and a mystery item which would be presented to us on the day. One of our teammates already opted for the bread so I decided to go for the milk My plan was to use a coke bottle, something like this: and cut it half way and use the cylindrical part Then get some Styrofoam and carve it in such a way so that I would be able to insert the half of the coke bottle i'm using into it then make a cover out of styrofoam to make an airtight as possible cover for it to prevent air and moisture from getting down into it. Afterwards then wrap the entire thing with foil to reflect any radiant energy. What are your thoughts on it? Would it be able to keep the milk preserved for the given time period???