The LightWedge is great for reading maps or books in the dark. A lens is built in which magnifies the text by 1.5 times. The device is portable and easy to carry around. The light source is LED which would normally not need replacing unless damaged. The device is battery powered using 2 CR2 batteries which give around 20 hours of light.
Product Page ($14.99) Via: 7Gadgets
I love the LightWedge mini! It is so handy! If you like this product, check out their web stie for more cool reading light and magnifier gadgets.