New from iBattz is the Mojo Treble Keychain Cable with Card Reader ($30), a convenient way to carry around a spare Dock Connector cable on the go. The tiny plastic shell houses a surprising number of features: unfold it and you'll find not only a dual-head Dock Connector and Micro-USB plug, but also a flip out SIM card ejector -- likely only appealing to frequent travelers who need to swap carriers or cards on a regular basis. A full-sized USB plug…