 The Tamagotchi Kakeibo (超やりくりエンジョイ！たまごっちかけいぼ chō yarikuri enjoi!tamagotchi kakeibo) is an accessory for the Entama-generation Tamagotchi toys released in Japan.It is slightly smaller than a home dekatama and very thin, as it is designed to fit into a small binder included with the toy.