That dog couldn't possibly have serenaded its owners for Thanksgiving.... it's holding the flute wrong!

or you could go low-tech like the Philadelphia Tree Tenders do... use a 5 gallon bucket with a few holes drilled in the bottom set it next to the tree seedling...

Besides as Brad stated that it looks "splashy" I also see a problem that, unless there is a heater somewhere along the system, the increased movement (and thereby contact with air) of the gravy will cause premature cooling. Tepid is definitely not how I enjoy my gravy. On the other hand, as Vim stated, it is no wonder restaurants don't employ this... kind of like those drink machines with the fountain inside to keep "juice" cold.