I saw this tip on Fons & Porter a few years ago and want to give the credit to their show. So many cosmetic departments and shops carry disposable mascara brushes. They come in a variety of shapes and lengths. They can be used to clean out lint from your longarm bobbin place, your domestic machines bobbin case can remove lint "build up" above the needle. These are easy enough to clean with a pin and will be "new" to be used indefinitely. Ask for some at any cosmetic counter in department store as I have and received a few for free.