
I use a purple Mighty Bright light when I read in bed at night. Sometimes, I use my ol' solar light cap just for fun. Neither of them hold a candle, however, to the Lili Lite.

[119.00 €, Lili Lite]
The Lili LIte is a combination reading light, bookmark, and bookshelf. Nifty, eh? A sensor turns off the light when an open book is placed on the shelf, and turns it on when the book is picked up again.
[Via Design Milk]
Related: Test Drive: 2C Solar Light Cap, Domestic Wish: A Window Seat, Lighten Up