Your class teacher is in the hospital and you still know to visit him, which shows that you are a good child, haha. In fact, when visiting patients in the hospital, people usually bring fruits or supplements and health products, but you don't need to bring these. First, you are still a student and you probably don't have much money. Second, for those who are in the hospital, everyone who visits will bring these gifts, so your teacher's room must be full of gifts now, so don't consider these.
In addition to those, sending flowers to patients is also a good choice. Flowers can not only improve the air in the ward, but also make people happy. Although flowers are beautiful, they are easy to wither and can only exist for a few days. I suggest you choose a cartoon bouquet with flowers as beautiful as flowers, and there are also cute plush toys. The overall look is much better than flowers, and the most important thing is that it will not wither.
In addition, it is also very good to bring a box of chocolates with customized words when visiting patients, write blessings on them, and it is said that chocolate has a little health care effect =. =