I would like to recommend this book. It is called "Goosebumps - Let's get invisible" by R. L. Stine.
Goosebumps: Let's get invisible - fandom.com
This book is about two brothers finding an attic with a magic mirror. One day they discovered the magic mirror and they pulled the flusher with it and the big brother went invisible. Their dog broke the mirror and the big brother stayed invisible.
This is a good adventure book. Your book club readers will love it.
Thank you
Daniel
