Movement Trays for Argatoria

These trays are a bit unorthodox.

Since these model are much less wobbly because of their lack of height, it seemed a waste to add magnets to a movement tray - I just want something to keep the models mostly in place and to have some sort of grippy bit to aid in movement. As such, there's no slot in the tray for magnets; instead there's a ring to hold the unique Argatoria bases reasonably in place. The base of the tray is thin enough that if you magnetize the bases it will still stick to