On a boyfriend's birthday, a girlfriend will usually spend it with him. Although 21 years old is not mature yet, this age only comes once in a lifetime, and you are with him. The best years are with you. Isn't this a good gift? Therefore, many boys feel that it is good as long as their girlfriends are there on their birthdays. They often don't care much about gifts. As for the price, you can choose according to your own situation. I can give you some suggestions:
1. A wallet is a very good birthday gift for a boyfriend. The price is not expensive. You can buy a good one within 300 yuan. Put your photo in the wallet. I think this wallet is priceless.
2. You can also give him a pair of couple letter necklaces. The unique letter chain with his name is very innovative. It is given by you, and he will definitely wear it well. You can choose it online.
3. Give him a pair of couple cups. You can go online to customize the color-changing cups and give him one as a birthday gift. The price is certainly not very high. It is a very good gift.