Work bags tend to house things not just related to work, such as your laptop, but also the essentials you rely on to get you through the day, like reusable water bottles, phone chargers, and and the ever-important tube of lip balm. Tote bags and sachets you can throw over your shoulder make good commute bags, as the roomy styles allow for easy access to essentials and don’t add much more weight to what you’re already carrying.