I’ve posted here before about beer can chicken, which I make in the oven rather than on the grill. You use the same wire rack and a can of beer (or soda or whatever), and set the whole thing in a baking dish, into which you pour a little of the beer.
A few weeks ago, I found a pan at Walmart designed for cooking a chicken vertically in an oven. It looks like a round cake pan with a big cone sticking up out of the middle. The chicken goes down over the cone the way it would normally go down over the beer can, and if you like you can put veggies in the pan to cook in the chicken drippings.
It actually works pretty well, and I’m using it for the second time tonight. I thought the whole point of beer can chicken was that you were steaming the inside of the chicken, and this design doesn’t do that exactly, but I think the cone probably conducts some heat and has the same effect.