For all you smart phone shutterbugs out there who've pined for photos with sharper details, here's a brilliantly simple product. The Macro Cell Lens Band is a sturdy rubber band with a built-in macro lens that fits on just about any smart phone. With it, you can capture the unique pattern on a butterfly wing or snow flake. At $15, Santa probably can afford to grant that wish.
As Gizmodo notes, the band does cover up the iPhone 4's flash, but as long as you're not taking pictures in a cave, you'll probably be fine.