If your basement is heated & you don't have a traditional "cellar", you can make an in-ground root cellar out of a 5 gallon plastic bucket! I used mine this winter, & I had carrots & potatoes from October until March! Cheap, simple, & effective.
While many partake in canning, drying & freezing the harvest, cold storage is another DIY option. Deanna explains the two methods: indoor & outdoor, w/ step-by-step instructions for a versatile indoor solution using plastic totes or bushel baskets.