Relatively recent to the Apple accessory market but atypically ambitious, The Joy Factory makes everything from device-specific stands to charging solutions, styluses and cases. This year, the company is showing a series of new waterproof and shockproof aXtion Pro cases for the iPhone 5 ($79), iPad mini ($99), and iPad ($159), each custom-fit to the specific device and certified IP68/MIL-STD-810 against submersion and military-grade drop hazards.…