If your home is like most, you have a "junk drawer."
This is not something that is typically part of a standard kitchen design. Junk drawers just happen. Take-out menus, coupons, pens, spare keys, and batteries all end up getting shoved into a single drawer. However, junk drawers can be ticking time bombs that can start a fire. All that's required to cause a tragedy is a single 9-volt battery, a key, and something flammable like a single tissue.
If you need proof of the danger, watch this video from CBS News in Pittsburgh. (They also offer a simple solution that easily prevents battery-sparked fires.)