This is my take on inserts for Gloomhaven: Jaws of the Lion

Everything is stored in the box securely with the lid fully closing, but each tray can be taken out easily to decrease setup and take down time.

The character decks are sleeved with Paladin Percival premium sleeves.
All the other cards are sleeved with thin and tight fitting penny-sleeves from docsmagic, you won't have any luck with thicker or larger sleeves.

I kept one of the envelopes to [email protected] the Character Sheets.

You'll need to print 4 Character trays, everything else has to be printed only once.

I hope you like it as much as I do!

Update 19.10.2020
I prefer alternative standee bases that do not damage the standees and added a tray for those.

Update 09.11.2020
Small upgrade of the Card-Tray to allow for easier flipping through the monster decks.

Update 19.01.2021
There seems to be a second edition with a little smaller (1 mm) game box size. I created an alternative version of the character tray that will fit in these smaller boxes (normal and increased small card space).

There also seem to be versions with huge initiative tokens (German version for ex.) - please use the alternative monster tray for those.

_{Since there are now several versions for different sleeve sizes, Garywoo2 was so nice to create a list with measurements to help you decide wich version to pick for your sleeves:
GH-JOTL_-Character-Tray.stl:
^{Tray is 110mm wide - Big card section is 92 x 67mm - Small card section is 71 x 47mm}
GH-JOTL-_Character-Trayslim.stl
^{Tray is 109mm wide - Big card section is 92 x 67mm - Small card section is 71 x 47mm}
-GH-JOTL-Character-Tray[small_card_spaceincreased.stl:
^{Tray is 110mm wide - Big card section is 92 x 67mm - Small card section is 73 x 49mm}
-GH-JOTL-_Character-Trayslim[small_card_spaceincreased.stl:
^{Tray is 109mm wide - Big card section is 92 x 67mm - Small card section is 73 x 49mm}
-GH-JOTL-Character-Tray[FFS-XL.stl:
^{Tray is 110mm wide - Big card section is 96 x 67mm - Small card section is 72 x 47mm}
-GH-JOTL_-Character-Tray[FFS-XL2.stl:
^{Tray is 110mm wide - Big card section is 96 x 67mm - Small card section is 73 x 49mm}}