Maybe you do not have enough space on your desk for both a desk lamp and an iPhone. No problem. The folloiwng concept can turn your iPhone into a desk lamp with the help of one of the many Flashlight apps.
(http://i31.tinypic.com/szy615.jpg)
Source: Artlebedev (http://www.artlebedev.ru/everything/brain/2010/07/20/)
This is very clever, however I cannot find any further information except at the above site which has no pricing or ordering information.