Actually, I'm having this built right now.
I have dual tanks, so I rarely get myself into a situation where I need Jerry Cans.
However, I DO want a cooler rack, and as luck would have it, they usually have Jerry can attachments.
I didn't want to buy a new bumper with it, and I didn't want to weld one to it, because I don't need it all the time.
I am having a cooler rack / jerry can holder made with an arm that extends from the driver's side, and slips into the trailer hitch receiver. It will be removeable this way, and to handle the weight, it will have an arm/bracket to allow the driver's side of the rear bumper to support some of the weight.
It should be done in a couple weeks. I'll post pics and info when it's done.