[mprovost]

For one off situations you can also buy dry ice and put it in the fridge. We used to do this during hurricanes.

[hadlock]

Regular ice works too, just take out your crisper drawers, put them on the top shelf and then empty the bagged ice into the drawers. If you can find it (good luck), block ice works best.

[mprovost]

True, but dry ice sublimates instead of melts so there's no cleanup.

[hadlock]

Yes dry ice is best, but it is about $1.25/lb, vs $0.25/lb; also regular ice is available in most countries year-round, dry ice has limited availability, even in the US.