hey Ron, Fazzios had drums that were filled with straw berries. They were $15, Ill see if they still have them.
Another thing to consider is the lid. If you have a high lid you can fit two shelves in there witch I highly recommend cause you can double the capacity, I have been making the lids out of one third of another drum if you can imagine; I get two lids from one drum.
The other way is to use the lid from a large Weber kettle, though I bet they are expensive to buy.
Also, and Tom, if you can get that welder to make you grates its worth it too. I weld in angle to hold the grates instead of using bolts. That combined with the beefed up grate makes it strong enough for me to stand on the grate. Using just the weber grate it is kinda light weight. But still effective.
I still haven't made one for my self.
Maybe we can build two when you come up Ron. They are really easy to build. Ill start setting aside some scrap.
We can fire up the double drum and smoke some beef ribs for lunch, you bring the beer..