I have no idea why didn't know! lol. And technically at the moment I have only written 4 Dasey-related Cossover fanfics.

Awe yay! Birthday Fanfics! Never had one before... lol.
A few prompts I can think of:
+ Cyclops/Audrey - "I'm on your side" / "I'm pregnant." / Lost in the moment...
+ Cyclops/Audrey/Claire - "We have a screwed up family." / Claire's birthday with her birth parents (Scott & Audrey)
+ Claire/Clark - "... you want to be a reporter?" / wedding cake
+ Chloe/Clark - Friends Forever / Don't let go / "I don't want to lose you."

Well there you go... lol. Crossover-Birthday Fanfics.... That's like really extra awesome! :D Thank you sooo much!