Either you bring it all by yourself in the airplane. An extra piece of luggage is around 55€ with Air France per example.
You can also rent a car and drive home. Often it's way cheaper to bring the car back to France afterwards and then fly home since you have to pay extra fees to leave the car in another country.
Another solution is to bring it with an international company. This solution is way more expensive than the other ones. But you can still get an ok price if you accept to bring you things home at the same time as another person. This means that you will have to wait to another person move to the same country as you, but you can save a lot of money this way.
