Requirements: This method requires Nexoto be installed.
To add the models, the keys, and the custom ui to your resource pack, follow these steps:
Step 1:
Find the christmas_crate_and_tools_nexo folder. Inside, there is the resource pack for the keys and the static version of the crates, the fonts, and the tools.
Main Folder
Step 2:
Open the christmas_crate_and_tools_nexo folder. Inside, you will find the glyphs, items and pack folders.