Would this help you while camping?

I'm in an engineering class and we need to come up with an idea of something to build to make camping easier. We have come up with an idea to make a device that will make fire tinder quicker, easier and safer. It would also catch a spark quicker because it would create really fine tinder. This would be more for people using flint and steel to start fires.
Would this invention be useful to anyone?? Has anyone ever injured themselves while making tinder? Would a one time purchase of a tinder maker be a better investment than constantly buying fire-starter bricks or man made tinder? Does it take time to learn how to make tinder by hand??
Please post and leave your comments.

 

You can turn dry sticks and pieces of bark into powdery tinder with a knife. Make a device that can turn it into a powdery tinder ,so you can save your blade that much longer in the bush. Also make something like a bag or pouch that will keep it dry from wet weather.