It is best to be around them and do something for them, such as doing housework and cooking some dishes. If you can't be around them, you can make your own cake. Choose the front one for your birthday, and then you can buy a small gift for the back one, or invite your parents to go to the movies together. I think this is very good. The website where I originally ordered cakes has now launched DIY cakes. You can design a style yourself. But I didn't seize the opportunity and plan to try next time. Hehe ... I hope I can help you.