It keeps heat and cold in because it does not efficiently radiate nor absorb heat
Cooking – roasting, steaming, frying.
Create improvised pots, food container and plates
Use as a Wind shield & reflect heat around cooking stove and/or a camp fire
Build a Solar oven
Signal mirror, also cut into multiple strips acts as signalling flag
By placing your fire starter on top of an aluminium sheet you will stop the wax or jelly leaking into the ground
**Excellent fire-starter is Vaseline-coated cotton balls
Police and cybersecurity experts recommend wrapping your car’s key fob in tin foil so potential thieves won’t be able to intercept your signal.