Answer:
1g/ml @ 4 degrees C by definition
Explanation:
Well you didn’t post any but I’m hoping that either plastic, lead, wood, glass, or paper, are an option.
Aluminum? It is a chemical element with the symbol Al and atomic number 13. It is a silvery-white, soft, non-magnetic and ductile metal in the boron group. By mass, aluminium is the most abundant metal in the Earth's crust and the third most abundant element
