A little off-topic, but it you share my passion for Sudoku, the 9-by-9 number logic puzzle craze that originated in Japan and is currently sweeping Europe and North America, you may enjoy this toy. $24.99 will buy you a handheld electronic Sudoku game with touchscreen and stylus. It's pre-programmed with over one million puzzles and eight difficulty settings, so it should keep you busy for a week or two.
This amusing gadget comes from ThinkGeek.com, a fantastic site featuring toys, gadgets, books, clothing, and more for the geekily-inclined. Looking for the perfect gift for the hard-to-shop-for techie in your life? You're guaranteed to find it here.
Great site, with full e-commerce functionality.