At work, I am idle most of the time. What should I do to kill time?

I am more free when I work, and I usually read books to kill time.

If you don't want to watch TV series or movies, then you will read novels, especially mystery novels, as an artifact to kill time.

Second, eat, drink and be merry. There are many snacks in my unit. If it's okay, I'll just make a cup of coffee and eat snacks slowly.

If I am really free, I will help my colleagues do some work.