[Closed] Bag contents organiser?

I just accquired the free cycling specific laptop bag that work provide, a Carradice Bike Bureau; and whilst it has some good points and is nice and big there are next to no pockets or dividers for all my sundry bike/work related stuff like tools, wallet & phone, mouse, power supply, hard drives etc. My previous bag had a few extra pockets available for such things.

Does anyone make some sort of organiser bag that fits inside a larger bag for subdry items? I know people make power supply cases for laptops, but it's mostly the small stuff. I'm thinking I might look at someone like Lifeventure or maybe a luggage company rather than something laptop specific.