I found this light and bought a couple. You can clip it most anywhere. it has two light levels. And since it is an LED, the batteries will last a long time. It would be great for an emergency light. You could clip it to the head of your bed.
http://www.amazon.com/Clip-Light-eReader-Tablet-Laptop/dp/B004CFSX30/ref=pd_rhf_p_t_1
WAB
http://www.amazon.com/Clip-Light-eReader-Tablet-Laptop/dp/B004CFSX30/ref=pd_rhf_p_t_1
WAB