By container, do you mean the little aluminum piece each candle comes from the manufacturer with?
Also, to everyone: I should have specified the type of tooling we have at our disposal. I am not able to press/punch anything from sheet metal such as cups, mugs, etc. Would be great if I could though. We really only have CNC/Manual Lathe, mill, and hone. Basically I can make things like handles for knives, stove pieces, solid type items.
For anyone unfamiliar with machining, imagine having a block of soap/wood, what can you carve or turn from it? Those are my capabilities with the given machines and material. Removing material, drilling, etc.
Thanks for the ideas though everyone! Keep 'em comin'! Im really stuck on the creative part. My little stove/grill will be neat but theres a million different stoves out there already proven.