Picked up a "gift pack" similar to the one in the picture. Has the beer can chicken stand, butt rub and but sauce. Cost me all of 50 cents at a resale store.
I use a small vegetable can instead of a beer can - The diced Tomato/chile Rotel sized cans fit perfect and you can try other liquids in the can as well. Get the liquid close to steaming and pour it down the mounted birds neck opening.