Loved the idea of the original designer but tweaked things more to my liking. Basically a redesign of parts: https://www.printables.com/model/774999-inserto-project-l
Printed everything without top or bottom layers using 15% grid infill in order to save on time and filament.
Print one shorter tray and 2 regular ones. The 1st one is shorter because the bits are smaller and this way all the manuals fit on top without any lid lift.