But this is where it becomes a power thing. The OOO person says that everyone else wants stuff from them that the sender can’t get elsewhere and you need to grovel to get it from them.
Also, you need to know your audience if you are going to go eccentric. Alison mentions that this message is fine in their culture, but it wouldn’t npbe appropriate for my somewhat formal field. And even if your workplace in general is casual, you might be contacted by someone outside. (In a tiny provincial courthouse I served in the past, there is a story going around that in the 80s a junior but elderly clerk used to address phone callers as hun and sweetheart and generally speak very informally. Most people thought it was funny, and then the President of Supreme Court called and… he didn’t).

My OOO is almost always “I’m out of the office and will be returning on x date.” My email sig has instructions along the lines of “for questions on x, email this list” for a couple of the more common areas people would contact me about that might need an urgent reply (as the lists go to more than just me, obviously), but most people have finally figured out to contact those lists to start with, anyway. If I were in the middle of a project or something that needed to be moved along in my absence, the project teams usually know when we’re out, but I’d put a back up in that case, if needed, but generally there’s not much to be gained by a longer OOO from me.
The exact dates you will be away.The reason for your absence. This is not obligatory, but bear it in mind. The thing is, people might still attempt to get in touch with you if you’re on a business trip or at a conference. They are less likely to try to contact you if they know you’re on vacation.The people who can assist a client while you’re away. Provide names, phone numbers, and email addresses so that colleagues and clients can keep in touch in case they need urgent help. It makes you look trustworthy in the eyes of the recipient and strengthens your working relationship with them.