Here are some kids books that I enjoyed reading. Getting a book that a child will want to read again and again, and that the parent won't hate, is impressive.
My current strategy to find books is look at illustrators who've won the Greenaway award, or writers who've won the Carnegie award, and then look at their other books or books that amazon recommends alongside these.
"The Book With No Pictures" by BJ Novak is fun. https://www.amazon.co.uk/Book-No-Pictures-B-Novak/dp/0141361...
"Pirate Diary" (Illustrated by Chris Riddel) is fun and has the right amount of gruesomeness to encourage my kid. https://www.amazon.co.uk/Pirate-Diary-Histories-Richard-Plat...
"Maps" (Aleksandra Mizielinska, Daniel Mizielinski) is a fun sort of atlas, especially if you combine it with Youtube etc clips. https://www.amazon.co.uk/gp/product/1848773013
My current strategy to find books is look at illustrators who've won the Greenaway award, or writers who've won the Carnegie award, and then look at their other books or books that amazon recommends alongside these.