This is such a pointless complaint. Why would having random frobbable items ever be an issue in this mission? It's blatently obvious what items are treasures/objectives.
The random objects like boxes, bottles, chalk, whatevers all add to the immersion. It's a wizard academy full of lived-in rooms filled with stuff. They're objects. Objects can be picked up. You don't have to pick them up. They _can_ be picked up if you want to though, which is what happens in real life. You can pick object...