Even before the raffles, I developed the packaging for the miniatures, as I believe that the packaging is important, and it is much nicer to open the box than to unpack a thousand layers of polyethylene)
Miniatures are securely fixed in the slots cut out perfectly under the size of their base, as well as insured with fishing line... just in case
White strips are designed for easy pulling out, just pull one of the ends and the base will easily come out of the cardboard groove

Tested for "mail resistance" on a test box and a test object glued to the base. Threw it across the room. The test miniature flew out only if it was thrown with all the force at the right angle directly into the floor/wall
So we secured it with fishing line just in case ^^