I don't know if this has been mentioned, but www.trackofthewolf.com has brass snuffboxes that might serve your purpose.
Other than that, get a can of maya dust and reuse the can.

http://www.trackofthewolf.com/(S(so5o1j551cw1r0qzaiczwv45))/categories/partList.aspx?catID=17&subID=105&styleID=396

One other option - look around for a round Daisy .22 caliber pellet box. They are about the size of a snuff can but they have a screw on lid.