How can you best behave or defend yourself in such cases when your boss takes out his frustration entirely on you?

Hello, I also ask myself what can help in such cases, when the supervisor, not just a few times, but constantly has something to criticize, something to nag about and somehow starts to take out his frustrations on you, sometimes making working conditions more difficult and dictating work processes that are not really profitable in…

What should you do if a colleague gives her boss a gift for no reason?

I find it so uncomfortable and somehow I don't feel comfortable with it. How can I return the gift without it being hurtful? It's a souvenir (plate) from her vacation, which I don't know what to do with either. Even if there was a reason for it, I don't like that.