Just in case any of the rest of you were thinking about going for mother of the year, just stop trying now, because I have it in the bag!!! Poor little foot :(

According to an article I found, as long as the milk container has about 1 1/2″ inches of headspace it should be fine (otherwise remove a bit before freezing). To test this for yourself, put a container of milk in a plastic bag and then freeze it. If you find the container will hold the milk without bursting, you’ll know for next time (assuming you buy the same brand/size of milk). If it does burst, the mess will be contained in the plastic bag for easy cleanup.
When you’re running low on milk, remove a carton from the freezer and refrigerate. Depending on the amount of milk, it will need a day or two to thaw. Shake the container well before drinking since it can separate after freezing.
Tips: