I bought a *clamp* lamp at Walmart for $5. It has the bendable neck and it clamps to the headboard, sewing machine table, window seal or any edge up to an inch thick. I used it last week under my glass coffee table for a light box to trace with. I loved it so much I sent my DH to get me another one so I can keep the one in my sewing room there permantly.
I found this link for you maybe it will help.
http://www.walmart.com/search/search...i&ref=&ic=16_0