Therefore, the most important thing to give your mother a birthday present is to express your thoughts and make her feel intimate and moved, which depends on your understanding of your mother's preferences and recent situation.
Clothes, ornaments, skin care products, combs, mirrors, hand cream, etc. Although they are common, they are needed by every woman. You can't give them away just because your mother doesn't care. The child's thoughtfulness is more touching than the mother's, and she will feel particularly warm.
In addition, if you are studying or working outside, you can organize the photos into an album and give them to your mother, so that she can look at them whenever she misses you. This is her favorite gift.
If your mother has everything, send her a bunch of carnations, so that her mother can receive your flowers in the envious eyes of colleagues or neighbors and in the praise of "Your children are really sensible". This feeling is better than anything.
I hope I can help you.