I ordered a large tackle bag using my Marlboro miles for kicks to see what I could use it for. It is now in my van being used as my tool bag. It has 4 plastic tackle boxes in it that you can change the compartments on. I love it, I can have my long screwdrivers in one compartment and small parts in others. You should be able to find plastic boxes of sorts like that to size how you need them plus you can see through them to know what is in them. Plus they wouldn't be very expensive and would stack. Wire tie the cables to keep them from getting tangled.

Just my idea.