I designed this to help new D&D players to understand initiative.
So each player, after having their character sheet, will pick a color. Each player then gets a token, colored base, and tag. The tag is used to insert into the lid in the order of initiative.
When initiative is rolled, then I insert the different tags into the lid, first at the top, second below it, and so on.
Dungeon Master monsters/villains will also have tags in the order they take their turn.
The lid can be slid back in the box, or it can be inserted in the slot so that it sits up on the gaming table for all to see.
I made the tags small enough so that if you wanted, you can slide them from one side to the other as players take their turn.
I added at the end the colored bases, so that regular 25mm round bases can sit in the colored base so that the DM can see the relation between the initiative order, and what that refers to on the gaming board.
The colored token was so each player can have that in front of them so I can relate players to miniatures.
I print each color based item as a group of parts.
I print one tag, one colored token, and one colored base at the same time.
I printed the Case, and lid separately.
Completely designed in Tinkercad.