Use a computer with a docking station or use your laptop so you work from one set of computer files. If you can link electronically to the corporate office, great. Keep your to-do list and calendar with deadlines with you in one planner. When divided between two offices and two sets of supplies, being caught at one place without everything you need is a big waste. Have essentials, will travel.
Portability is key.
Purchase and use portable file carriers for easy transport of active files. Create files for major clients or projects. If you don't have dedicated office space on site, create an office survival kit for the items you use most regularly. Stay a part of the team. Although you won't be in the office every day, it is important for your co-workers and superiors to feel like you are still a team player.