A clip for holding the pages can be made of either cardboard or wood, with two holes to attach the charts and a hole at each end of the clip so that it can be hung on a string. The most common device for mounting flipcharts is the tripod easel. TRIPOD EASEL Strings [ ARDB CU Strong Cardboard strings WOODEN CLIP Nut and Bolt *- Wooden Clips S- Nut and Bolt