I live in an apartment and I have an old neighbor(50-60y) that makes a lot of noises specially in the morning, moving furniture every frigging day, even on weekends.

I asked him to stop, try to do it after 8AM but he was very aggressive with me and I can see that there is not much left for me to do.

I can get access to his apartment through stairs and every apartment has a small window that goes directly to the kitchen.

With that in mind, I could throw stuff inside or something like that. What can I do to make his life more miserable and still remain anonymous? I also have access to where his car is parked but this has more people walking by.

A note is that this person have a small puppy so I don't want to do anything that may hurt the puppy. I just want to make his life(and sleep) as bad as mine is getting.