Biscuit tins or similar (Cefnsuran Farm LD7)

At this time of year many people will have a tin of biscuits or sweeties; when you've finished eating them, I'd love to take a few empty tins off your hands for storing all my many, many seeds. The metal ones rather than plastic tubs are what I'm after, please. The metal tins are ideal as they are rodent-proof, sadly a consideration.