While I really enjoyed @peloquin17's creation (found here: https://www.thingiverse.com/thing:3221230) of an insert (with individual players compartments) - unless you kept it horizontal; all of the pieces could potentially come out and mix while in the box. It needed some ‘space fillers’ - hence this creation to:

1. stop the components from coming out of their unlid'ed boxes
2. be very light-weight
    

**Note:  In order for everything to ‘sit flat’; you'll need to remove the ‘DS_tracker.stl’ file/holder and instead place the four trackers flat on the directions (as shown in the picture).