I couldn't help it, the fired bullet casings seemed to fit into each other perfectly -different calibers, of course- and after a prototype trial -for sale as destash- I decided to make a couple of more built pieces to wear as pendants or even keychains.
A brass casing on the bottom holds a steel -I think it is steel- one inside closing like a small bottle -No waterproof-. The rest of this fabricated mixed media element is pure copper also fused/braised.
The steel casing has a bail on top that connects to a chain to prevent losing it and to add a bit more dramatism and it could be a fun element to carry our allergy pills, any meds we need in a dinner, or just as is. 
It measures no counting chain nor floating bail 74 x 46 x 12mm approx.