The comments explain this.
One user mentioned:
And why this won't be seen as too friendly (a personalized gift does sound friendly to me as you took the time to really think about it) and won't be seen as rude by the other coworker?
I would still like to know how spendy time thinking of a personal gift to offer will be seen as less weird than spending money? Also, you didn't address the "rude to other" part of the question, which is the main reason for my downvote.
As you repeatedly left the same passive-aggressive comment at that user, I stepped in. I told you:
Our answer policy calls for expertise, not opinion (provide sources) and explaining which specifics of the question affect your answer.
The steps to undeletion are:
Read those posts. That is the policy that you keep asking about, and which others have linked multiple times.
Edit your answer to respond to those comments.
Then you can raise a flag to have the mods look at it.