Briefcase o' Bees

Briefcase o' Bees releases a swarm of angry bees that are hostile to everyone, including the player, as well as several friendly bees that you can catch with a Bug Net.

You can unlock its recipe by using the Briefcase o' Rewards item, which is graciously bestowed by Kevin as a gift for your hard work.

Contents
11 species of non-hostile bees can sometimes be found inside this briefcase: Aquarum, Artisan, Assassin, Bumblebee, Carpenter, Crystalwing, Cuckoo, Digger, Honey, Inventor, Leafcutter.

There are also 10 possible types of bee-like hostile monsters like Giant Metal Bee.