Basket
The Basket is a container block that can capture dropped items through its open side, like a Hopper.
Baskets can be placed facing any of the six cardinal directions, and will even work upside down. Items colliding with its open face will be captured and stored in its inventory.
It has the same inventory size as a Chest or Barrel, but lacks the ability to actively transfer items between blocks, such as extracting from, or inserting into, adjacent inventories. Other item-transferring blocks can interact with a Basket normally.
They have a similar capture cooldown to Hoppers, and can be similarly disabled with a Redstone signal.
When waterlogged, a Basket will fully contain the water within itself, only letting it flow out of its open side. The waterlogged Basket will still count as a block of water to its neighbors, allowing for safe crop hydration, and even compact Cobblestone generation machines.