Sometimes needles were even handed down in wills. Today because of mass production, needles are so common that they are given away by stores with painted canvases and are included in every kit. Blunt needles have dull ends which don't prick your fingers. The most common type of these are tapestry needles, which are used for needlepoint and counted cross stitch. With a blunt needle it is almost impossible to pierce the threads of your ground fabric.
Sharp needles come in a dizzying array of sizes and shapes.
Sharps are basic sewing needles. Betweens are shorter than sharps and made to take tiny quilting stitches. Beading needles are very long, very thin, and very sharp. These are used for all kinds of beadwork. There are special needles for sewing upholstery, leather, hats, and just about anything you can imagine.