I just used basic acrylic paint for all of these. I removed the velvet lining from the interior piece of the wooden box and sanded/cleaned it until most of the existing paint and glue came off.
With these changes, this is what my haul now looks like:
The wooden carved box on the tray also got a little bit of a makeover. It had some old felt lining inside that looked pretty gross, so I ripped it out and covered the inside with white gesso instead. I may go back and line it will some pretty paper or fabric scrap later, we'll see!
I can't wait to put this all to use!