There a lot of people in the world and many people are afraid of being killed when they are asleep.
They are pop stars, politicians, rich people and others. My idea is to create a Bullet-proof bed which will help them to sleep without fear. This bed will be like a big box and it will be closed when people are in bed.

So this will be comfortable bed with air conditioner into it and with many other interesting stuff like radio station for urgent summons and also there will be some food and water.

Who knows maybe people will buy this bed.