Aside from advertised use they are excellent for temporarily securing plastic or tarps until folds are made and holddown ropes are installed to neatly cover outdoor items.
I use binder clips in my purse to keep like things together and am able to locate them quickly. I also keep my grocery list and my coupons which I intend to use that particular day together with a binder clip clipped to the handle of my purse sitting in the seat of my shopping cart. How much easier can that be?? I use binder clips when I do crafting in many instances. I keep them in the glove box of my car also and they have come in handy many times. I could go on and on about the uses for them but I'm sure you get the picture. Love them!!