I was inspired by this bike (because it's so ****ing awesome)....
and started messing around in photoshop. I think I'm going to get a Wald rack, with the riser set up. So far I like what i've come up with on the comp.... and the Wald racks are like $15 so why not. I've found myself in many situations where I needed more cargo space. I think it'd look something like this:
If I get it I'll post real pics soon enough.