Here's some recent expedition mods. You can kind of see the rear African Outback drawers.

I removed one of the 2nd row seats and in it's place installed my refrigerator and storage for up to two 5 gallon water containers. I like these water containers, because their cheap and you can lay them down somewhere and you have an on off spicket. Also bolted down a fire extinquisher and some other stuff. All using existing factory bolt holes.

This makes the 7 seat Land Cruiser a 3 seater now (actually 3.5 seater, since you could cram two people in the remaining rear seat), but that's fine, because it's only my wife and I and I dont anticipate needing to carry more than 1 additional passenger. Plus, the seat can be bolted back in in minutes if I need too. There's also a ton of extra storage behind the driver's seat not in the picture.