If you don't have a spare refrigerator, you can also drop them in a 5 gallon bucket (with a hole in the bottom) with some wet light soil or sawdust. Bag it with a black garbage bag. Put it in the shade outside and wait for spring. Make sure you don't leave any air pockets in the soil and keep it damp once above freezing. Some people just heal them into the soil if it isn't frozen, like next to the house.
Nurseries do that to me all the time.