If you find that the soups and sauces you put in plastic freezer bags fall through the wire rack of your freezer, try this freezing technique for liquids. Cool your leftover soups, sauces, etc. in the refrigerator then pour them into a resealable plastic freezer bag. Next, cut the top off of a clean milk or juice carton, place the sealed freezer bag into the bottom of the carton, and pop it in the freezer. Once frozen, remove the bag from the carton and you'll have a block that's easy to stack.
Source: Sobey's (my local grocery store) "Inspired" magazine
By sooz from Toronto, ON
This page contains the following solutions.
To save leftover broth or juice that is about to expire, or any sauces or juices that you want to save; use your empty water bottles. This will work great for Thanksgiving, when you are making broth from the very last remnants of the turkey.
When freezing leftover sauces or any liquid I always freeze them in the smallest round or square containers I can. Then I set them on the counter just enough to thaw around the edges so they will slip out into a ziplock bag.