Just spotted this deal on a 3-pack of Lenspens. These very useful tools for cleaning camera lenses. They have a special dry carbon powder to clean lenses, removing grease and fingerprints while not damaging lens coatings. The other end of the pen is an ultra-soft crush. A quick google search reveals that they come highly reccommended by many photography resources and review sites.
The cheapest I could find them on e-bay was >£5 a piece delivered , so this is a good deal if you plan on using them a lot, if you know fellow photographers or to give them out as gifts.