I'm happy with whatever, but FWIW, I'll second ashdigger's suggestion -- the zip top mylar bags. Magnitudes more robust than ziploc (both walls and zip), and we'll use space in the box far more efficiently than if we try to arrange tins in there.The Mylar bags that were used last time were Mylar with zip top. Very robust. No machines needed.
I personally would advocate against tins.