Welcome to Bag Week 2018. Every year your faithful friends at TechCrunch spend an entire week looking at bags. Why? Because bags — often ignored but full of our important electronics — are the outward representations of our techie styles, and we put far too little thought into where we keep our most prized possessions. I’ve always been wary of modular, rail-based bag systems. They’ve always struck me as rather military and imposing, which I suppose is kind of the point.