Scratched hard wood floors?

Does anyone know what I can use to fix the small scratches in my hardwood floors?
Thanks!

If you want a quick cheap fix, buy a can of mixed nuts. Break open the different nuts and smear it on the scratch until you find the oil that matches the one of your wood. It will covers it really well! I had to do this when I moved my couch and forgot about the floors

Thanks! That is definately not something I would have thought of!