A display aid is a tool used to help present information in an organized and visually appealing way. The two most common display aids are a RACK and an EASEL. A RACK is a structure with shelves or compartments used to store and organize items. An EASEL is a frame used to hold a painting, board, or other object upright for viewing. Both of these display aids can be used to showcase artwork, photographs, or other materials in a professional setting.