You must prepare well for your parents' birthdays. It is difficult to repay their kindness in life. Seize every opportunity to make them happy and do something within your ability for them. Here are some suggestions for you:
1. Give your dad a gift he likes. You can buy the tea and wine that he likes to drink. I believe that he will like such a gift very much.
2. Give a creative little gift, a real doll of the whole family. I believe that mom and dad will like it very much. The feeling of family happiness is the definition of family happiness. You can also give your dad a box of DIY chocolates. I believe he will never think of such a gift. Let's taste the delicious chocolates together.
3. Give a etiquette gift, a watch, or a tie, are all good gifts. Your carefulness and growth are the gifts that dad likes to see the most.
This is my opinion, I hope you will adopt it.