What's the best birthday you had?

Happy pisces season you angels among men! I'm in love with a pisces and she deserves the world. She's not sure what she wants to do for her birthday but I just have to celebrate her in some way. So, what's the best birthday you ever had? Maybe just for inspiration or maybe I'll learn something that can make a pisces feel super special/ be super fun. I definitely know it will come down to her interests but I'd appreciate any answers :) Thanks!