We all need to learn to be grateful, whether it is our parents or our mentors, because they have given us a lot of irreplaceable guidance on our path of growth. Giving a gift at ordinary times may feel abrupt, but it will be very solemn and meaningful on Labor Day. You want to order it online, right? Customizing gifts online is now very mature. You can choose a reliable website to have a look.
As for what gift to give, everyone has their own opinions. Personally, I prefer digital oil painting, which is very trendy, a good home decoration, and quite practical.
By the way, if your teacher has children, you can give your teacher's children some gifts, such as teddy bears, dolls, etc. Giving it to the teacher's children is equivalent to giving it to the teacher. Haha, the teacher is someone you should be grateful to for the rest of your life.
I hope my answer can help you!