Just finished building a rolling cart for my Smokin-It #2 smoker. I made a couple small (but deep) drawers for aluminum foil, paper towels, rubber gloves, two timer/thermometers, etc.
The two casters on the left are swivel/lockable casters and the two on the right are fixed. Rolls very nice!!
Behind door #1 on the left is a set of three tubs that hold my wood chunks. Behind door #2 on the right is my liquor cabinet, fold-out 55" LCD TV, and chase lounge. :)