NOVELTY - The play box (10) has a light-emitting element (12) having a transparent or semi-transparent synthetic resin material, and located in bathwater agent (11) for performing pressurization and solidification using a raw material having solubility. The bathwater agent is dissolved in the water when the bathwater agent is thrown in the water. The bathwater agent is floated up on the surface of water when a LED lamp (22) of light emitting module (20) emits light in arbitrary color, and a contact portion of blink circuit and power supply battery (23) supplies electricity.    USE - Play box for accommodation of toy.    ADVANTAGE - Since the bathwater agent is floated up on the surface of water when LED lamp of light emitting module emits light in arbitrary color, the pleasure of water-play with child's component can be doubled. The process of adhering insulation film can be skipped, the structure of play body can be simplified, and the improvement of operation efficiency and the reduction of expense can be achieved.    DETAILED DESCRIPTION - A light-diffusion film is accommodated together in a state when the contact portion is exposed to outside. The bathwater agent is previously separated and formed in a cover and main portion. The contact portion of light emitting module is insulated and located on recess which is provided in the surface of main portion. The raw material of bathwater agent is water soluble powder or granule containing component which consists of polyethylene glycol, ethylene glycol, organic acid or carbonate. The light emitting element is equipped with a modeling portion (13) in which external shape is formed in decorative shapes such as flower, fish, animal and various characters. The sound is produced from sound module (31) when the LED lamp starts to blink.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the play box.    Play box (10)    Bathwater agent (11)    Light-emitting element (12)    Modeling portion (13)    Light emitting module (20)    LED lamp (22)    Power supply battery (23)    Sound module (31)