Here's an insert for the Jump Drive card game (Rio Grande Games). It's our first design from scratch! If I've missed any details in this summary, let me know and I'll be glad to edit :)

3 pieces in this insert:

1. Card holder - fits sleeved cards (inspired by TomJBC's Dead of winter design); fits all the cards in the game
2. Money token tray (which I place at the bottom)
3. Token tray for the explore tokens (where, if you're neurotic about keeping stuff separate like me, you could choose to put the Survey Team and Player Summary cards) - this tray also acts as a cover for the bottom tray

Alternatively, you could just print the bottom tray for the money tokens where the explore tokens fit as well (shown in a picture) but if you don't keep the box horizontal, the pieces will fly everywhere.

[ Sorry for the orientation of the stl files, not sure why it's not coming up right! (input is always appreciated) I've changed the orientation at least 5 times by now... :S ]