Openables is a mod focused on loot-bag type of items. It implements various types, and even has some mod support preconfigured (ProgressionUtils).

Technically, every openables loot table can be changed using a datapack, however, the item quantity is hard coded.

Below, there will be images provided of the mod as well as a brief intro to editing the items and drops.

Currently, the mod adds various types of openables. The first type, is simply called Openables, and they are tiered Common through Legendary. As of the latest versions, these always drop 3 items each, from the data/openables/tags/item folder matching them. Common for Common, Legendary for Legendary, etc.

Following that, is 3 that are hard-coded, and these give Spawn Eggs. One gives passive mobs, one gives hostile, and one rolls boss-like mobs.

Then we have the Mob Drop and Resource openables. These ones can be edited by editing the mobdrop and resource tags in data/openables/tags/item

Gifts are the newest addition to the mod, which drop more items based on the tier of Gift. These use the GIFT1, through GIFT5 tags in the tag folder to load their possible loot. These are merely just another type of openable added for pack makers who want to do things with them. I personally am using them for server-gifts on servers I host.

Currently, the mod has 10 hard-coded custom openables. These always drop 3 items, and can be edited in the lang file as shown in the image above. You can also change their assets, to make something like this:

To customize them, you edit the lang file to give it your name and tooltip, and then you can also change the model by editing the assets/openables/model/item json file that matches the openable in question. I recommend using blockbench to do this.