I got the trivet from a suggestion here, it's a Fat Dadios rack from Amazon and it's well made!! I don't know how I got along without it. If you want to up your cooking game on the Q's, try a rack. Great for ribs, roasts, chicken, etc.
we use the Q 200 for the two of us when in the RV, but have cooked for 6 before and done just fine.