homemade fire pit

Any suggestions on where I can find a pellet firebox/hopper/auger with temp control for a whiskey barrel project. I’m still in the game planning phase so I’m not sure if it will be offset or UDS style.

Picked up this old grey, no stamp, weber kettle. It has 3 vents on the bottom. The side handles are just molded steel. I want to use it to make a fire pit for making marshmellows and hot dogs on and just sittin around, shootin the chit. I plan to put wheels on it so I can roll it out of the way...