Basically, with these, when you find one your kid likes, you want ~8 more
My kid is relatively scared, so avoided these for a minute, but then was obsessed with the goofy-silly monsters and light capers. And there are 13 + 4 + 1 encyclopedia of these.
Notebook of Doom Complete Series (13 Books)
Does your kid like dragons? They will after these books--my kid suddenly had several imaginary dragon friends. Relatively formulaic, but compelling, and feature a range of diverse lead characters. The latest book had a nonbinary character.
Dragon Masters | Tracey West
We picked this up at the library and my 7 year old wouldn't let me leave until he'd read the entire thing. A set of 7.
Hilo Book 1: The Boy Who Crashed to Earth
We picked this up in the library at 6pm and my son read it three times before bed.
Cat Kid Comic Club Book Series | Dav Pilkey - Scholastic
Chapter Books
I read Ramona as a kid, and wasn't sure it would hold up. My 6 year old loved it as much as I did, and the only thing that was jarring was the description of a now-long-ago middle class (e.g. being able to afford a new house with one parent working a...
The Complete 8-Book Ramona Collection
Loopy non-scary spy capers. With pictures! (And a chance to talk about the Cold War.)
Mac Undercover (Mac B., Kid Spy #1) by Barnett
Graphic novels about wars? My kid has read them all ~10 times and reads me his favorite funny parts aloud.
Nathan Hale's Hazardous Tales Series - Abrams Books