This is a small box insert for the Omens expansions for FFG's Elder Sign game. It is big enough to hold all big cards (sleeved in UG Premium Soft Sleeves, because they are thin) and the expansion-specific mythos deck (sleeved in whatever sleeve you like, I use the UltraPro Mini American ones), as well as all tokens and monsters for an expansion. There is enough space on top to fit the manual as well.

I included the OpenSCAD files as well, so you can modify this design to fit unsleeved cards.

This design will most certainly not fit Gates of Arkham if sleeved, as there are too many large cards.