I always have a supply of medium binder clips around because I use them to hold my wide neck laundry on hangers and to close up plastic bags in the freezer. And now two of them make a perfect recipe card holder.
I've also included some other uses that I found on the internet and wanted to remember.
Clothes hanger clip -- thickness of the hanger does not matter -- the clip will fit them all whether they are fat or thin
Freezer Bag Clip -- and they are never bothered by the cold. Works every time and over and over with no breakage at all. When the bag is empty I place the clip on the edge of the dish drainer so I don't lose track of them for the next time.
Wire Holder/Organizer -- not only does it organize tiny wires (like ear buds or USB cords) but you can also hang it on a tack to keep it in its place
Sock holder -- nobody buys clothes pins anymore so binder clips take over the small jobs they used to do
Can be used as an additional clamp when gluing papers together
Place Card Holder -- decorated to match your theme of course!
Emergency Skirt Repairs -- can actually be worn on the body in a pinch, so to speak, LOL -- until you can get things fixed permanently
Tooth Paste Tidy's
Wrapping Paper and Ribbon organizers
Phone Dock -- Clip both ends of a business card and stand it up -- then slip in the slim phone and you are good to go hands free
Emergency cuff links -- must use small ones for this, medium's are too big