If the binder clips don't fit, and you can't find luggage straps, look for sew-on velcro strips in the craft area of WallMart. They come in packages of maybe 4 or 6 foot strips. You don't need to sew them together, just stick the ends together (hard to explain, but obvious when you are doing it. ) I like to trim so there isn't excess dangle to catch on everything - PITA!

This is not ideal, but it works. I had to resort to the velcro after it became clear that the two-pack (expensive!) Zoo-med metal clips were not sufficient to keep the ten gallon glass tank screens secure. (grrr...)