Are normal doorbells just not cutting it for you? If your doorbell is just too quiet and it needs to be revamped, Colin Furze has created 3 of the most incredible, and loud, doorbell systems ever. As a Youtube inventor, he kept finding himself missing packages due to him working in his shed. He realized he needed a louder more effective doorbell, and boy did he create one. By far the most outrageous doorbell he created uses a submachine gun to fire bullets at fire bell. You kind of have to see it to believe it.