I've bought a backpack for my laptop, simply because of the fact that it looks like a real backpack instead of a laptopbag (saves you from getting mugged). There's plenty storage available, I put all my computercables, audiocables, interface and my efx-500 in there as well.

It can be found here:

http://www.laptopshop.co.uk/dicota-b...case-2-cc7.htm