As you can see in this pic, broken DPN's were salvaged to become VERY short needles to hold 3 or 4 stitches each while knitting the fingers on gloves. These short ones make it much easier to keep an eye from getting poked out, or getting long tips snagged elsewhere on the glove. Keeping them in the M&M candies tube means I don't have to rummage around trying to find them all. Besides, who sez all your needles gotta be the exact same length?
And yes, I did make all of these in the pic. The thin ones vertically on top of the wooden ones are actually pieces of metal coat hanger, clipped to size with pliers and points filed... they make nice US#1 size. Did I mention I'm a cheap S.O.B.?