A stationery assembly includes a body and a partition formed on a bottom of the body for closing the body. A sound device is received in the chamber. A stapler is upwardly secured on a bottom of the body. A lighting device is mounted in a front end of the body. A first trough is defined in a top of the body. A second trough and a third trough are respectively defined in two opposite sides of the body. A first insertion, a second insertion and a third insertion are respectively and partially inserted into the first trough, the second trough and the third trough. A fourth trough is defined in a rear end of the body and a fourth insertion is partially inserted into the fourth trough. The body, the first insertion, the second insertion, the third insertion and the fourth insertion are assembled to form a dolphin model.