Daily tip time! (MINOR SPOILERS)
Find yourself running out of food, or wish to spend less money on food? Or perhaps you're trying to feed the plush, and want to be cost efficient in doing so? Consider befriending your friendly neighborhood Aririals! Once they move into their treehouse, try leaving them shrimp once a day, and they will bestow upon you lovely gifts, like daily shrimp, a box of cookies, or even feed you in your sleep with cups of (what I would assume is) blue pudding, that can also restore a bit of your sleep.