My wife found this article last month in her recent issue of Mother Earth News- It might give a member or two some ideas of connecting a smoker box to the exhaust of a Weber kettle. It would be fun to try. Hope someone takes the next step and tries it out.
https://www.motherearthnews.com/diy/tools/meat-smoker-plans-zm0z21onzols
https://www.motherearthnews.com/diy/tools/meat-smoker-plans-zm0z21onzols