When my son was this age there were all manner of books - historical fiction, spy books, humour, mythological retellings! - with both male and female heroines. Now almost 11, he loves David Baddiel, David Walliams, Frank Cottrell-Boyce. He's enjoyed Judy Blume and the Percy Jackson novels, amongst a bunch of others.
Now either I am old and tired, or I just can't find them for looking, but I'm looking for a similar range for my DD. Yes, she has access to all the books mentioned above, but she has a soft spot for kittens, magic and female characters. I was like that at her age; I loved female heroes and (because it was the 80s) my favourites were often the sidekicks.
There's an absolute glut of Magical Animal ghostwritten ones - sort, repetitive, honestly dull - and injured rescue animals, but I'm really looking for titles with a bit more to them now.
Spies. Crime solvers. Modern school stories. Myths. Historical. Adventure. Epic fantasy mermaid trilogy. She loves the new She-Ra show, for example, which has so much going on in terms of plot complexity and character interaction. I'd love for something like that in book form.
Female heroines preferred (she'd like it) but she's only 7, so we'll leave The Hunger Games and Jacqueline Wilson for a while.
Just something with a bit more plot depth than Rainbow Fairies :)