something that was brought to my attention recently: cameras/recorders/laptops...
Its tricky to have a place for them that is very easy to get at (you won't use them much if you have to unpack them) but also offers security and impact/dust protection.
Enter the Tuffy console again. I notched the side of it so that I can run a wire into/out of the console. For our gps, I have an external antenna so that the gps unit can sit inside the locked console but maintain a reading. The notch also serves to keep the gps attached to a 12v power source inside the console. This way when the gps is outside being used, it is still powered on 12v. Batteries are great and all.... but for something you use all day every day, 12v is preferable.
With better gear, I found that a good solution was to keep most of my lenses/equipt in a Pelican case located behind the driver's seat. It was awkward to reach for a quick stop, but easy to access from the back door. The pelican case was always (always!) locked with a small padlock and cable that went through the driver's seat support bracket.
My thinking on security is that whenever you can, better to have the default position be "locked" that way you aren't as liable to forget to lock something up when you take a break. I live in a tourist town in Central America.... the number of people I've heard say "I only left it for a half hour (few minutes, a minute...)". One group I know left their luggage in the car in front of the hotel while they walked in to get a quote for the night. Came back less than 5 minutes later... no luggage left at all. Another group left a bag under the front seat of an otherwise empty rental car while they went to the beach. The bag only held a digital camera, but that camera had all of their memories from the week long trip. They were gone about half an hour and the car was parked somewhere "safe". The passports and iPods that were in the flimsy plastic glovebox (with a lock) were still there when they returned.
Suffice it to say, I feel it is important to keep things under lock and key. Not necessarily an impregnable fortress, but just a lock and key.
So- back to cameras:
In addition to the locked-down Pelican, I also carry around a Nikon dSLR with a single lens in a simple soft-side case. The case sits in the center console, which is unlocked while I'm driving. That way, I can grab the camera quickly and/or grab the whole case to go eat lunch, but I can also just lock the console when I get out and have everything handy yet safe. The soft case protects the camera from bouncing around (as does the fairly full center console)
For driving around day-in/day-out, I'm now carrying an Olympus 770sw point n shoot. The thing is a tank. Waterproof to 33ft. Drop-proof to 5 feet. Dust proof, period. Doesn't take great pictures, but the battery lasts a solid week with occasional use, and I can slip it into my pocket easily.
Point being: when you are planning your storage mods, keep in mind that there are two types of storage. The first is "crap you are going to want to use every day WHILE you are driving"
The second is "crap you are going to want with you when you stop driving" and can be broken down into an infinity of degrees, but generally isn't stuff you need while the car is in motion.
If you plan well on storage, the rest of your expedition will be much more pleasant.
Incidentally: anywhere you can, try to use keyed-alike locks or resetteable combo locks with the same combo. You don't want to carry around 20 keys. Trust me. Tuffy sells additional locks that are keyed to match your center console, so you can incorporate those into some storage solutions. Master makes high-quality brass padlocks that have a 4-dial combo that you can set to whatever you want. Do keep in mind that there are times you'll have to leave your keys with someone (mechanic, car wash, valet, etc) so I would say that its a good idea to have your door/ignition key be different than your storage key(s).
Last thought on digital stuff: back it up. back it up. back it up.