Mid-Autumn Festival is a traditional Chinese festival of reunion. Foreigners should also follow the local customs and invite him to celebrate the festival together. Naturally, you can give him a gift. Here are some small suggestions:
1. When giving gifts to foreigners, you should still give them Chinese characteristics. You can give him a folding fan with ink paintings or calligraphy. Elegant gifts will also make him feel that he has integrated into China.
2. Since it is Mid-Autumn Festival, of course you have to give him a box of exquisite moon cakes as a gift. I believe that beautiful packaging and delicious moon cakes can make him satisfied.
3. Give a creative gift. You can make a real doll of him with some Chinese characteristics. He will definitely like it very much. You can go to some specialized online stores or physical stores to customize one. There are also other small gifts. You can also choose them yourself.
These are some of my suggestions. I hope they can help you!