You can make one yourself. It's not hard. Start the game with "tools". Select to create a new mod. Name it what you want. Then when it is created, select to edit it. On the page that comes up, Click the word "items" On the right there will show a page with details item in general. Scroll down until you see "stack size". Click the + sign to open a list of all the items. Change the number showing to what you want. As of Feb. 2025 after an update, the stack sizes have large numbers, such as 256, but they do not correspond to what happens in the game, so you need to change it in order for the players to carry more. Do that one by one for the items the characters can collect when looting. Then, at the top, click on the "save" icon on the top far left of the page. After that, click on the > symbol. That "packs" the files. I am not totally sure if we need to do that, but I always do and all works. Then you get a popup saying something such as "mod created". Click "OK". Then close out the Storyteller modding screen. Test it in your game.