Library Hidden Objects

We're in a library with a whole treasury of books. Even though the shelves are completely filled with books, there are quite a few cluttering objects around. Our goal is to find these objects, clean the library and make it more useful. For this reason, in the first stage, we will find the objects in the upper part and spruce up the surroundings. In the next stage, we will go to the other room and find other objects. However, time is very important to us and we need to use this time well. We have the right to get hints, but experienced players don't use this option much.