I have read often, that you should start each new project with a new needle, and so I have wondered just what you do with the old needles. Do you just put them in a case and throw them away, or is there some way to sharpen the point and reuse? I have always just put them in my throw away bottle, but have a hard time doing that, because to me it is wasteful. Any comments on what you do, are really welcome. Thanks in advance for all comments. They are always so useful.