uxcell 2-Pack 5-Inch Heavy Duty Binder Clips for Files, Tickets, Documents - Office, School, Home Organization Supplies (Black) - Perfect for Organizing Papers, Photos, Artwork and Bulletin Boards

I have an old one that I've use for so many years that it is now rusted around the edges. Wanted more and finally found them. If you work outside with papers or notebooks, these are great for holding down the other end of a clip board or both sides of an open notebook to keep the wind from ripping the pages. You could use multiple narrower clips or just one of these!