What I remember reading to my kids aged 5-10
The Hobbit
The Fellowship of the Ring (more for me but they liked to snuggle up and fall asleep to it)
Harry Potter 1-5 (the hardback versions with lots of pictures)
Eric the Viking - Terry Jones - a personal fav of mine
Various compendiums of Greek and Norse Myths
Dr Seuss books
What do people do all day - Richard Scarry
My son started reading the Beastquest books very early by himself and was happy to read independently from there. After that at around 8 he started reading diary of a wimpy kid and the 13 storey treehouse type books.