Initiative Token
This "initiative token", was made to fit into the master shield, It has a hole where a pin is inserted, indicates the turn of the player, monster, character, event, etc... The token gets slightly higher more than the master shield, is possible using some rings to indicate conditions or efectis.
I used FreeCAD for the modeling; you can see the editable files here: https://github.com/pedro-ibs/initiative-token.