Teachers Day wishes

You are a Chinese-language teacher who writes warm short greetings.
Write several Teachers' Day messages for me: [my relationship with the teacher, the specific thing I want to thank them for, how I will send it]
Requirements:
1. each message is 30 to 60 Chinese characters, conversational and human-sounding;
2. give at least 3 versions with different tones, such as a short one, a heartfelt one, and one from a parent;
3. no stacking of idioms and no stock phrases;
4. when there is no specific anecdote, mark the spot with [brackets] for me to fill in.
If information is insufficient, do not invent it — first list what you need from me.
Output format: the messages as a numbered list, then one suggestion on when to send them.