There are Animal Crossing keychains worth around 500 JPY in Akihabara, or you can just online shop it. Also, there's an Isabelle Nendoroid (a figurine that makes you switch faces and poses of a character) that comes in her spring/summer and autumn/winter clothes, but it can get quite pricey. Animal Crossing plushies exist too, but they're hard to find so I suggest searching them online, but unfortunately they only make few plushies of villagers so there's a chance that your favorite don't have one.