I slipped an additional tealite over the top of another, sealed the edge with silicon and then cut a hole in the top. This gives me an oz of fuel in a very light burner. But for some reason the tea lite set up seems too fragile for me.

I found a fluted tin at Bed bath and Beyond that holds an oz of fuel and, though not as light as a tealite, doesn't weight much. Best thing was the price...29 cents!