As often as homeowners hang art too high, they use the wrong tools to get the job done.

In my car I keep a tote full of simple tools.  The most valuable to my business is my hammer along with my tin box of picture hangers.  I made this tool kit with a carrier I got at Michaels.  It is intended for scrap booking supplies, but works great for me.  I realized how necessary it was for me to bring my own stuff when one of my clients removed her shoe to pound a thumbtack into the wall!

I recommend Ook Picture Hangers.  And, of course, a hammer!