Advice please for my cat

I need help my cats birthday is on 7.2.21 and i dont know what to do for her birthday i think it would be nice to give her a wet food cake with cat nip and a treat as a candle but i dont really know what i should get her as a present... :( ive always wanted a cat tree but my dad just hasnt got around to buy one yet and i really want to do something special for Nala's first birthday she really deserves the world she has brought me out of a dark place :)