To enter a password, go to the Post Office and talk to Aikotoba-san. When entering the password, characters in lowercase are hiragana, characters in all caps are katakana, and characters within brackets are small characters.

Effect	Password
Angel Set (Costume)	tenshitachinoutawokikasete
Baa Baa Set (Costume)	mokomokohitsujisanme-me-me-
Brownie Doll (Furniture)	chi[ya]iroiyouseishigotodaisuki
Butler Costume Set (Costume)	paki[tsu]toSU-TSUniPIKAPIKASHI[YU]-ZU
Cactus Set (Costume)	O-MAIAMI-GOPARUFU[A]BO-RU
Cartoon Costume Set (Costume)	GURUMEnakigurumimigurumiguru-mi
Choco Mat (Furniture)	GIRIGIRIchi[yo]ko[tsu]toCHI[YO]KORE-TO
Christmas Furniture Set (Furniture)	entotsukugu[tsu]teGEHOGEHOSANTA
Cowboy Set (Costume)	RODEOdekimeroKAUBO-I
Dancer Set (Costume)	tsukiakarinoodoriko
Devil Set (Costume)	ma[tsu]kanaSUI-TORITORUDEBIRU
Endless Summer Set (Furniture)	hizashinoshitanoSHI-SAIDORABA-ZU
Festival Set (Costume)	ENYAKORASAnoDO[TSU]KOISA
Gigagabito Disguise Set (Costume)	GIGAGAde[tsu]kaiGIGAGIGAGABITO
Halloween Furniture Set (Furniture)	papukinKERAKERAokashiwoPURI-ZU
Halloween Pumpkin Set (Costume)	KABOCHI[YA]batakedetsukamaete
Halloween Witch Set (Costume)	yoiyamiKURONEKOGARASUnohitomi
Heart Rug (Furniture)	RABURABUHA-TORAGUHAGUHAGU
Laura's Hat (Costume)	RAURAurarakafuwafuwaRARARA
Maid Costume Set (Costume)	SUI-TOKI[YU]-TOniFURIRUdepon
Ninja Set (Costume)	KOREgaKOREyueKOREniteDORONnoPA
Play Pool and Ocean Floor (Furniture)	hiyokopichi[ya]pichi[ya]mizuasobi
Prince Set (Costume)	minnanooujisamaebibede[i]hia
Sailor Set (Costume)	suiheisennosuiheisan
Santa Costume Set (Costume)	HO-HO-SANTAgayozoraniHO-HO-
Snow Child Set (Costume)	yukinohiyukiyamayukidaruma
Snowman (Furniture)	marumarumanmaruyukidaruma
Snowman Costume Set (Costume)	yukifuruyukiyamaooyukiniyuki
Soccer Court (Furniture)	midorinosougentamakororin
Soft Pudding (Consumable Item)	FU[A]NTAJI-RU
Spring Furniture Set (Furniture)	haruhaakebonoHIRARIsakuranomichi
Spring Wreath and Grassland Floor (Furniture)	harunourarakananoharanohana
Summer Rain Set (Furniture)	KERO[TSU]KUGERO[TSU]KUGA-GA-pichi[yo]n
Valentine Furniture Set (Furniture)	BITA-niSUI-TOtodoketeMAIRABU
Witch Hat (Costume)	konekotomahoutoEROSETORA
Yueria's Clothes (Costume)	tsukinoyoruuchiaketachiisanakoi