Yeah i have that going on with Gloomhaven at the moment… so excited to get the game going but so petrified of revealing any spoilers.
To its credit the Gloomhaven Facebook group has been wonderfully self-controlled about revealing spoilers… they have also had good ideas for making box inserts. One guy even posted his own laser plans for the insert!
Perhaps the relevant FB Group could be a source of information/inspiration for you?