4. Solar Oven
Warm and delicious meal, even if you do not have power and you have no where to warmed them. This solution is easy to do and you can do it at lunch time! Simple construct, which costs nothing.
Warm and delicious meal, even if you do not have power and you have no where to warmed them. This solution is easy to do and you can do it at lunch time! Simple construct, which costs nothing.