Ok I've read a couple of these and here's my thoughts:
The Book Thief- Markus Zusak
AMAZING BOOK! I unfortunately did find it a little bit boring for the first third or so. Once you get past it it's a really amazing read. One thing that @Caustic_Fraust left out is that it's told from the perspective of Death, which made the narration a little different at times (which I personally didn't mind, but I've read some reviews and not everyone feels the same). And I know it's been mentioned already but the ending is so sad! It's one of three books to actually make me cry. But, at the same time it was also kinda bittersweet (I don't know how to elaborate on that without spoiling the entire ending, but just trust me). Absolutely recommend this one.
(also, a small correction, but the main character goes to live with her foster parents, not her in laws).
Stardust- Neil gaiman
I really enjoyed this one as well. In a nutshell, it's about this guy who promises the girl he likes that he'll bring her back a fallen star, so crosses over the wall around his village and enters this sort of fantasy land to find this fallen star, but the star turns out to be a person and there's lots of others who are trying to come after her. It's a really unique story, also highly recommended.
Inkheart- Cornelia Funke
It's been a while, but this one is about a man who has the ability to bring fictional characters to life by reading the books that they come from out loud. His daughter also has the same ability and ends up accidentally bringing a villain character to life. I remember really enjoying this one, but I tried the sequel a couple times and couldn't seem to get into it.
The lord of the flies- William Golding
I'm not gonna lie, but I really hated this one. It's about a group of schoolboys during WW2 who get stranded on this deserted island. They try to keep things civil and set some while they wait to be rescued, but as time goes on all the order kind of collapses. There's a couple really weird moments in there, and I remember it was hard to keep track of who was talking at times. It wasn't really my cup of tea, I guess, and I wouldn't personally recommend it but if you're really set on reading it then go for it. I know a few people who did enjoy it (including my brother who doesn't even like reading that much). I was also reading it for a novel study, which probably made it less enjoyable.
Bridge to Teribitha
This is another book that I read years ago. It's a good book, but it's a little deceptive in that it starts out as a heartwarming story about two very imaginative kids who become close friends but takes a turn that I did not expect at all. I won't go into detail because I don't want to spoil it, but honestly this book really stuck with me and I'd definitely recommend it.
Also, a quick side note, but I only found out like this year that this book came out in the 70s? I always thought it was really weird that the MC went to hang out with his music teacher in that one part, but it makes a lot more sense knowing that it probably takes place in the 70s as well.