I've been looking everywhere for a place that has this information, but to no avail. So I'm going to post it here and begin documenting my finds on the game and it's files (I hope others will help with it).

1st find:
"Going into the trinkets folder (via steam) by going to the properties tab for DD and going to browse local files and choosing trinkets then choosing base.entries.trinkets.json and opening it up with notepad++ you can edit the values on the
items, and if you change the "rarity" of the item to "kickstarter" you can call the item in the game with it's name via the kickstarter
menu. Have fun with that (and feel free to inform the Darkest Dungeon community about anything like this that you've discovered)."