Used to make turkey broth then put the broth in ice cube trays and freeze for single use later.
I freeze homemade broth in muffin tins (thanks Alton Brown) great for recipes - each one is half a cup. (freeze-pop them out-into storage bags)
I freeze broth in the big 3 lb margarine tubs. It’s just right for a big pot of soup. Also, drain canned veggies into a margarine tub and eventually there’s enough for a pot.
If there’s a fantastic buy on eggs (not in any recent memory), separate them and freeze in ice cube trays. Put a couple yolks in each cube. Fill the cubes with whites. Thaw at room temperature if you need “fresh” eggs.