amanoffewwords,
There is something a little different. How about a
Utilikilt ?
It eliminates the need for a rucksack all together.
Then there is
Spire who specialize in bags for computer related activites.
If you are looking for a tool kit there is the
WORKSTATION REPAIR TOOL KIT
There is the
Scott E Vest
With something like 30 hidden pockets in it.
Take Care,
Richard