This must be what the folks at eHobby Asia define the word "fun" which to be them means lobbing CO2 grenades at the shop when there's no customer around and it's break time for them. In this video, they show the Hakkotsu Thunder B CO2 Sound Grenade Multi Package which comes with 1x Soundflash Bottle Shells, 1x Flash Bang Bottle Shells, 1x Pineapple Bottle Shell, Fire Lever, and Safety Pins. You can order this package for just US$27.00.