You could get a ladder, a basin of water and practice making lead shot!
Or more in keeping with some of the museum work you've been doing you could practice some hammered wire rings, bracelets and hacksilver type things before progressing onto more expensive metals.
Maybe make some Roman lead sling ammo. I like the ones where they've cast them from a thumb print in sand and the nail and features of the thumb are still visible after all this time.
Sent via smoke-signal from a woodland in Scotland.