Gifts for parents can be chosen according to their hobbies, habits and personalities. For example, if Dad likes playing cards, you can give him a high-grade playing card, and he likes smoking. You can give him a cigarette holder, or a lighter, and give his mother a silk scarf suitable for her temperament, or an aromatherapy stone (to relieve fatigue), or a massage instrument.
My aunt likes to keep healthy. You can give her some American ginseng lozenges and other health gifts. Or perfume, scented tea, etc.
I hope my answer is helpful to you ~