No matter what great storage system you have there are two key things to managing your stuff on the road.
1) Pair down. Simplify, and get used to less. Focus on the trip, the life, the lifestyle. Your gear is secondary.
2) Though your gear is secondary, you have to keep it in its place. As well as the literal (put it away after you use it), I also mean that you cannot let your technology and your stuff run your life. Therefore, a strict discipline is required to manage it all. Think like a sailor: everything has a place, everything gets accounted for, and everyone takes part in that effort.
With those 2 points in mind, here are the practical things we do:
- Eliminate cables. Mount stereos, XM radio, GPS, VHF, internally in dash, centre console, or on the ceiling. Have nothing portable and temporary. Combine units into one where possible. We have nothing plugged into a 12V socket.
Convert your gps to bluetooth if you use a laptop to navigate.
- Have two drinking bottles (nalgene or whatever), one for driver, one for passenger. Choose between cold drinks or hot drinks. Don't try to have 2 insulated mugs and 2 water bottles. They have to fit in the centre console.
- Utilize space under the front seats. We keep binoculars, garbage bags, flip flops/runners and my wife's purse.
- Toilet paper belongs on a gear shift.
- Have a garbage bag (just a plastic grocery store bag) hung from the other gear shift.
- The area between but behind the front seats gets a custom box/shelf system for papers, books, maps, laptop, jackets, cameras.
- Use a docking station for the laptop. Keep a decent battery in it. The laptop stays behind you while you're driving, and when it's required for navigation the navigator unclips it from the docking station and it sits on a lap. Ram mounts are neat, but they take way too much real estate. I've rarely needed the navigation while driving for longer than 10 minute stints at a time. Once we used it for a few hours straight navigating through the forest in Belize, but then it wasn't a problem - sitting on the passenger lap was ideal.
If you have any more stuff required while you're driving, you've got too much.