If you can learn how to make yourself feel special without anyone helping you, it will be the best, long-lasting, life changing, liberating present you could receive, and way better than anything that anybody else could provide you with.
Think of all the things you can do that you love to do. Lie in for ages, long hot bath, read a book, watch a film you love, eat your favourite foods, massive pudding, wear clothes you've bought as a treat, talk to friends, do something creative, listen to your favourite music, learn about something you're fascinated by etc etc.
Anything you can't do on the day, schedule it in for the week and have 'birthday week'.
It's all by you, for you. Single and rocking it. Who needs a relationship to be happy?