The chemistry teacher can give toys, because he has children, and children like to play with toys.
Is the physics teacher a man or a woman? If a man smokes, he can give a lighter or wallet! But both are more expensive! Girls can send perfume, but they should know what perfume they like. She can also choose to send a mobile phone pendant, which needs to be beautiful. She can think of you when she picks up her cell phone.
As for the Chinese teacher, I think your evaluation of her is good. You can give her your own composition. The content of the composition should be about the Chinese teacher. As a Chinese teacher, I think he will be very touched when he sees his students give her their own compositions.