Major Crossover

I was thinking about doing a crossover thing. Which ones do you think that I should use:
Artemis Fowl
The Blackwell Pages
Coraline
ParaNorman
The Dark is Rising Sequence
Black Dragon Codex
Enchanted Forest Chronicles
Fablehaven
His Dark Materials
Inkheart
The Kane Chronicles
Maximum Ride
Percy Jackson and the Olympians
Peter Pan
Septimus Heap
Spirit Animals
The Spiderwick Chronicles
Hatching Magic
Warriors.