I have found this thread so interesting. I have such a variety of pins and needles because of the kind of work I have done over the years. I have pins from 3/4" to 6". Needles up to 12". They all have their own pincushions which I've made from leftover scraps of upholstery velvet. One is even made from burlap. I fill them with pine sawdust from under the table saw. I have also used poly stuffing.
I love my sewing room and all of my machines. I'm recovering from heart bypass. It cheers me up to just be with all my sewing goodies.
Joyce