The box is very simple in design but clearly made with fine craftsmanship and care.  Inside the box are 6 wooden and metal windup creatures in the shape of 2 penguins, 2 squirrels, and 2 frogs.

As an action, activate from 1 to 6 of the creature trinkets by winding them up.  As a bonus action on this turn or any subsequent turn, move the trinkets and/or activate them via a small button on the inside of the box.  Upon activation, the trinkets produce the following effects:

Penguin - 4d8 Cold Damage in a 10 foot radius.  Saves are DC (CHA) of 16.  Take full damage on a failure and half damage on a successful save and have disadvantage on all attacks for 2 turns. 

Squirrel - 4d10 fire damage in a 10 foot radius. Saves are DC (CHA) of 16.  Take full damage on a failure and half damage on a successful save.

Frog - 3d6 Poison Damage in a 10 foot radius.  Saves are DC (CHA) of 16.  Take full damage on a failure and half damage on a successful save and be poisoned for 2 turns on a failure. 

Each trinket has an AC of 12, 10 hit points, and a Speed of 20 feet and can be destroyed before activation.  Once activated, the trinket is also destroyed.