CursedFlames

Makes the singleplayer world icon update each time the world is loaded.

Makes potions of all types stack to 16.

Disable increasing repair/enchant cost on items in anvils

Stops players' attack cooldown from resetting when they switch items.

Dye the top and bottom half of shulker boxes independently.

Completely removes item durability

Rotten flesh inflicts Pale, which causes damage in sunlight, instead of Hunger.

Random modifiers for equipment, that give minor buffs/debuffs

Hoppers containing buckets remove and add fluids from the world.

Allows nametags to be used on players - depending on config you can rename yourself, other players, or both.