Rick, I made a cheap smoker out of a 3 drawer filing cabinet. Have a stainless colander in the bottom drawer to hold the charcoal and wood chips. Middle drawer holds a stainless bowl for any liquid. Top drawer has a stainless rack wired to the drawer to hold the meat. Installed a thermometer in the top drawer. No need to have any vents for the smoke outlet. It usually holds at around 220* which is perfect for what I use it for.
I think I have $10 invested in it (thermometer). Already had the stainless and found the filing cabinet on a 'big trash day'.
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Nice but I need to make or buy one electric. I am on O2 and can not be around open flames. Polack go poof followed by lots of screaming.