The term 'staple or clip on' can be solved by the word 'ATTACH'. Attaching is a common way to secure items together, such as papers, documents, and other materials. Staple guns and paper clips are two of the most popular tools used for attaching items. Staple guns use metal staples to hold items together, while paper clips are small metal clips that can be used to bind papers together. Both tools are easy to use and provide a secure way to ATTACH items.