When I was last in France, I didn't have much time to shop. I was there for work, and just had a couple of days' worth of free time. So, I ended up bringing back some small boxes of macarons, which are delicious and delicate cookies that are made in a huge variety of flavors and colors. They are a beautiful and tasty gift. Best of all, there are even kiosks at the airport that sell them (though it may be cheaper at a bakery). These could not be placed into your checked luggage, though, you'd have to carry them on. I also bought a few gifts at the gift shop of one of the museums I went to. I love good design and interesting jewelry, and museum gift shops usually have a great selection of interesting things you don't see otherwise.