Developed by Singapore-based Fabrix, this new series of $20 Cases for iPod nano 3G, iPod touch, and iPhone are very simple sleeves consisting of patterned exterior and solid soft interior fabrics. The company makes each case to fit the size of your iPod or iPhone, charging the same price for any design. Thirty-five different fabric options are available, and custom-sized versions are available for a $2 premium to fit non-iPod/iPhone devices.…