Additional Buckets Mod (1.19.2, 1.18.18) adds many useful buckets. These buckets can be made from many materials, including Obsidian or Diamond. You can store multiple buckets of fluid in the buckets, which allows you to hold more fluid in one bucket. These buckets can also be used as replacements for regular buckets when crafting, making them easier to use. You can also use them as a fluid storage/transfer device like a tank.