Brilliant Idea I just thought of

Why has no one ever combined matches and incense sticks. You could tip the incense with flint and put sandpaper on the box that they incense comes in. Instead of using fire to light the incense, you would just strike it on the box and then blow it out.

Someone should invent...

Someone should invent a tattoo that lasts only 5 years. That way, if you decide you don't want it anymore, it will just disappear in 5 years. It would probably involve some kind of vegetable dye.