Plasma Cutting Table on the Cheap?

So I've been noodling on this for a couple days and have a couple of paths to pursue outside of commercial units. Saw a guy on youtube put one together with angle and flats, but he used a small hotel pan to hold the water. It could be mounted to the side of a bench or simply set on top and sized up or down based on the pan. About $30 into it which fits my budget.
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I've also considered making a round slat grate and setting it in my old Weber kettle grill with a big SS salad bowl underneath for the water. That solves the storage issue but I'd have to drag it around to the front of the garage to use it. Could do something similar with the Solo stove fire pit.