Beat the game yesterday (Candy Box 2).
Once you have the Jasper crown and the Enchanted Staff, you can do some serious farming, though frankly you just don't need to farm that hard in Box 2. But if you're so inclined, go to the Sea and stick yourself on the floor during the Jellyfish part. If you have Black Demon, that can speed things up but requires your active participation. With a certain item, this can get you a lot of candies as far as farming goes, but see below*:
Winning strategy: max your lollipop production early (4500/second), don't bother upgrading your candy production because it costs you so many lollipops. Convert lollipops to candies at the well. Max out your HP (really doesn't take many candies). Get the regular knight armor, equip the enchanted spoon and the pink gloves, make two berserk potions, and go to town.
*Also, there is a better way to farm related to beating the game. Note the item slot I didn't mention in the winning strategy. You can reap millions of candies for about five minutes' investment (counting 2-2.5 minutes to make your berserk potions).
I decided not to do the Hard Mode on the basis that I already sank like two days (not a full 48 hours, mind you) into the game.
Box 2 was fun but lacked a lot of the charm of original Box.