Don’t intentionally exclude people you worked with in your farewell notes
Your colleagues are smart. They’ll read between the lines. Don’t intentionally leave names out of your farewell notes out of spite. Rise above that and include those who worked with you, even if your interactions with them were not always of the positive sort.
Complete any unfinished tasks or projects
Leaving a job with unfinished tasks or projects is absolutely uncalled for. While you may not be able to bring every major project to completion, keep working as though you were planning on staying on board for a good while.