I don't have a problem with bobbins from my DSM, because I use it only for piecing, and usually the thread on a bobbin runs out. But the longarm bobbins are another story! I like to quilt with lots of colors, which means I wind up (no pun intended) with lots of half-used bobbins. I tried the ponytail holders, but the problem was that they kept me from seeing what color thread was on the bobbin. I have a couple of bobbin rings, but there's so much wasted space in the center of them. Now I store most of them in a little box, and I keep them all in a drawer. The tails do come unraveled, but it's under control. The tails from the thread spools are another matter.