As a girl, I personally think that the gift that can move a girl the most is not the value of the gift itself, but your performance, how much thought you put into her birthday, and your intentions can most impress her, so you must be creative when giving gifts.
Your girlfriend is not a vain person, you can give her a handmade gift, make chocolates, cakes, and desserts for her by yourself, or cook a table of her favorite meals by yourself, and give her a surprise when she arrives. It is a girl's nature to like romance.
In addition to these, birthday gifts are still necessary, engraved couple rings, sterling silver name necklaces are all fine, about a hundred yuan, not too extravagant, but the meaning they represent is very special! You can also give a bouquet of roses, it is best to send it to her workplace, or give it to her in front of friends, so that she will feel more face.