I needed something better than the cheap hard plastic that came on my pet disposal bags.  The plastic kept breaking and I'd lose the bags and containers, which was both expensive and annoying.  These work great.  I also used them to attach mini flashlights to my purse, dog leash and pet's collar. I noticed that my brother, unknown to me, had purchased some, too.  He also finds lots of uses for them.  My only wish is that they came in different sizes.