me = cheap and cheerful. i just screwed an old ammo box to the 1" thick rubber matting in the back of my disco 1, where the passengers side rear seat should be. it is perfect and you can still fold down the boot seats, i dont have a picture but it is a very good fit, also you can store small things like c/b ariels down the small gap inbetween the arch and the box.
also i am going to use the satbelt of a boot seat to retain a 20l jerry can, this will be aswell as the seat but i have not got a jerry can yet, as i have not had he chance to buy one.