Bennettt Haselton has a gift idea for this year that needn't necessarily cost you any money (if you have a color printer available), though as he points out there are ways to invest in a higher-quality result. The gift? A unique picture created with a few pieces of free software and a bit of your time. Bennett writes: "You can use these little-known free programs to create a photomosaic of a friend's wedding photo or other favorite photograph, for a uniquely personal gift that doesn't cost much but can still delight. Follow these steps to use the programs most effectively and get the best results." Read on for the rest.