Here is the folder at Fotki where you can find the staples. Just right click on each staple and "save as," but make sure it says it is a .png.
I also wrote a tutorial on how to create staples.
I cannot believe I have never made a staple before. I am trying hard not to get distracted by other creating and to work toward teaching myself how to create the basic elements. This will help me make better mini-kits.
You will note that the staples progressively get better in the Fotki folder. That is because as I practiced and thought, I got better. However, I felt even the first staples were unique and give a different feel to a page, so I shared them, but if you want the better staples, head for the last ones in the folder.