I only found this out a few years ago, but you can buy a ham bone from the HoneyBaked store without buying all the meat that goes with it. Last I heard they were available for around $5.
BALSAMIC GLAZE
Nice on a Caprese Salad of fresh tomatoes, mozzarella and basil leaves.
METHOD BTB 2 c balsamic, 4 tb br/sugar (or agave, honey or maple syrup).
Pour into jar or bottle. Store at room temp. Thickens as it cools.
Martha put chicken liver/pear/shallot mousse in small glass-hinged apothecary jars; topped it w/ the balsamic glaze.