This guide introduces a two-story farm where you can easily obtain baby rabbits by feeding them carrots while they are in boats.
With two sets of carrots, you can get 64 baby rabbits, and after 20 minutes when they become adults, you can obtain items.
If you want more items like rabbit hide or feet, a cat gift farm might be more efficient.
Since rabbits are small, they are fixed to the boat and rotated to feed them carrots evenly. The player just needs to hold a set of carrots in the designated location and right-click. Once you've given all 64 (one set), go down to the lower level and repeat.
This farm has two floors. You can build more floors if you want.
You can get 64 baby rabbits using 2 sets (128) of carrots. Baby rabbits don't drop anything when you kill them, so you have to wait 20 minutes in real time for them to grow up.
If you want more items (rabbit hide, rabbit foot), a cat gift farm might be better. However, the downside of a gift farm is that you can't get rabbit meat, and only the tamed owner can use it.