Often, when I finish with a book, I want to burn it. Not really! But I do love this magnifying glass that doubles as an emergency lighter.
The Magnifire Reader or Firestarter from Kikkerland has a 2.5 x Fresnel lens capable of both blowing up text, and setting it alight—hence the nod to the Zippo's form factor. It's just an all around gorgeous little object that, at £5, seems like it would make a great glovebox tool for both detailed map reading and emergency situations. [Kikkerland]