Glass containers are also well suited for freezing down different ingredients, but if you freeze down liquid remember to allow some space on top for it to expand. If not, the glass will break from the expanding liquid and it will pour out - hardly a delicious thing to clean out of the freezing compartment.
And if you want to dispose of the container having used it three or four times, think of how much waste you have saved.
And in the end - remember to recycle!!!