These two items popped up on my news feed at the same time and I felt the coincidence warranted some coverage. The Building Character Etsy shop sells these wine stoppers made with billiard balls.
In a more impressive vein (how did they drill through them so perfectly?) Eleanor Salazar fashioned these unisex rings from mini billiard balls, creating some stylish jewelry from an unlikely source.
Creative Reuse of Billiard Balls