Bountiful is a mod centered around a single block called the Bounty Board and items which appear within: Bounties!
Bounty boards can be found throughout the world in villages, and they'll generate bounties inside of them. These bounties often ask for you to bring back an item, or kill some mobs in return for whatever rewards they're offering. If you can complete the bounty, you just have to bring it back to the bounty board and right click the board to redeem your rewards!
There exists another item as well, called a Decree. A Decree determines what kind of bounties show up on a bounty board. For example, an Armorsmithing Decree makes it so that objectives and rewards related to armor show up on the board (leather, iron, chestplates, boots, etc). You can have up to three decrees on a bounty board at once, and it will mix and match objectives and rewards from all three when new bounties appear!
You can find new Decrees as rewards for certain bounties, or they can be traded with villagers at higher villager levels.
Just like items, bounties can have different tiers of rarity. Some bounty rewards are more rare than others, and bounties with higher rarity have a better chance of having these more rare rewards! Rarity follows the same pattern as in vanilla: Common, Uncommon, Rare and Epic.
Currently, I've added some support for some items showing up in bounties from over a dozen mods. You can view the list of compatible mods for 1.16.5 right here. Compatibility for mods in 1.19.4 is being worked on.
I plan on adding more in the future!
I originally made this mod so that I could be given some goals to accomplish, which would stave off boredom. It gives players something to do when they're bored, and a fun way to incentivize crafting items they'd otherwise maybe not be making!
Additional commands, as well as instructions on how to modify bounties, can be found on the wiki (WIP for 1.14)
AkiShirai, for the wonderful bounty board block art.