It’s been over two months since Apple released the iPhone 3G, and most iPhone accessory manufacturers have had time to create the first round of iPhone 3G-compatible accessories. The term “coolest” is totally subjective, of course, and in the iPhone world it’s even more so — one person’s cool new iPhone 3G case is another’s dorkiest design mistake ever conceived in the history of cases. “Interesting” and “compelling” are usually more accurate, so here’s a roundup of some of the iPhone 3G accessories that are worth taking a closer look at.