So like a said in my world arisoul I'm making a crossover challenge where the main anime that has to be used is D.N.Angel. You can use anime anime with it and if your mind is drawing a blank here are some anime's that you can choose from.
Code Geass
Bleach
Ouran High School Host Club
Digimon (Any season)
Inuyasha
Durarara
Fruits Basket
Beyblade
Final Fantasy (Any one)
Yu-Gi-Oh (Any one)
Kingdom Hearts
Vampire Knight
Maid Sama
Tsubasa Chronicles
etc...

Keep it in theO's guide lines please which means PG13. which means limited swearing, blood, and things like that. I'll give you all two months. And for prizes I'll think of something.