I took an inexpensive "tomato" pincushion and divided it into sections with a marker. In each section I wrote the size of a sewing machine needle. I put used, but not used enough to throw out yet, needles by size in their sections. In the section that is the size I have in my sewing machine I put a flowered flat head pin. So, at a glance I know what size needle I have in my machine. Since I like to use a different size needle for cotton and flannel and machine quilting needles for machine quilting or sewing on binding I need to change my needle fairly often. Using the pin cushion for needles has really helped keep me organized.