Hard box for shipping or packing a tiara

Sometimes you just have to have a tiara. Tiaras are generally pretty delicate. It helps if you have a scheme to pack one that will keep it from being crushed or bent, even if just taking it from the palace to the party. Some of us do not have extra tall horse drawn carriages.
After inserting the tiera, I close this the box with a light-weight bungee cord.
I printed this in PETG with no supports.

A modification for this that would be cool is a hinge and snap.