You can give her a color-changing mug with her photo and some words printed on it. It is usually an ordinary mug. After pouring hot water, the photo and words on it will slowly appear. It is very magical. You can also print his photo on a Lock&Lock mug, which can be folded to save a lot of space.
You can also give her a gift with Chinese characteristics, because you can't buy Chinese things when you go abroad. Bring a gift with Chinese characteristics, and you can look at it when you miss home, such as Chinese knots, the fiery red color is like the Chinese flag, and embroidery, which is purely handmade and has a good texture.
You can also give her a musical instrument, such as a flute or a xiao. These instruments are relatively small and will not take up too much space. They are all wind instruments, and it is not particularly difficult to learn. You can play them when you miss home.
You can customize some creative and commemorative gifts online, such as crystal engravings with deliberately customized content, real dolls customized with real photos, name necklaces customized with names, etc.