I had a thought as i was pumping myself a cup of coffee out of one of those large pump containers which hold coffee at 7-11. What would happen if you used this container to condition your beer and then dispense it beer engine style. Could it work as a cask conditioned ale dispension method on the cheap. I really think i might try this if nobody can tell me why it would be a bad idea. As long as the thermos was airtight it seems that it ought to be a suitable conditioning vessel and technically speaking the piston pump which operates it should work in principle analogously to a real beer engine. Surely someone has thought of this. The only drawback i can see is that it might look silly. Also the containers are small enough to allow for consumption to outpace oxidation right?