The best elastic fasteners I've tried

These things are great, I bought them for my Stairville Stagecurtain but I've used them for many other things including, but not limited to holding cables in place, clipping accessories to my hiking backpack and as a bicycle clip to stop my jeans getting eaten by my chain wheel on my pushbike!

Great for their intended purpose, but a real great thing to have around for general purpose too, as essential as Duct tape!