For my main idea there will only be 2 items to fully create the idea. A book with secret invisible writing and a pair of glasses that has multiple different coloured lens like this:
with each different coloured lens down, there will be a different image portrayed in the ordinary book that you are reading which will make the book more interesting to read and to look at and for some, it could be adventurous. There will be a small compartment for the glasses at the front of the book. There will be different sized and age-related books for everyone. Also these glasses can be adjusted for anyone so it can fit nicely on their ears and nose without having the problem of them slipping off or not fitting.