All of the above listed are great!! I have most in my arsenal, I even have a headlamp, however I too never thought to use it while cooking, but I will now, except while using my Rec Tec because that has a light built in.
The one thing I have been using a lot of lately that I did not see listed was the Frog Mats! They are great!
Rec Tec, GMG JB, 22.5 WSM x 2, Weber Rach Kettle, Weber Kettle 22.5, Competition Pitmaker Smoker Trailer