DIY: SLR ring flash
Essentially, what the anonymous author did was take some fiber optic strings, a couple of balloons, a tube of toothpaste, and some zip ties, and make a way for the on camera flash to come from the front of the lens. It also makes the light spread out more evenly, which can be a major issue if you are taking close up shots.
Judging from the test shots on the site, it appears to work reasonably well. Looks a bit too “DIY” though in my opinion.
[via Slashgear]