You've probably seen them on TV for $19.95. These things are touted as wonderful to quickly thaw your frozen meat or whatever without the partial cooking you get from a microwave thaw. Yes, they do work, but here's the secret: they're made out of cast aluminum, which has great temperature-conducting qualities. So check your cupboards (or your mom's) for a heavy cast aluminum baking pan. These were popular in the 50's, and may also be found at rummage and/or estate sales for a fraction of the cost. They don't actually thaw in minutes, but do cut thawing time significantly.