Then there was the occasional one who would do what Alison mentioned with the sickness excuses, and create a tale that read like a police report: “I must miss my deadline because, on the night of August 12, my 45-year-old sister was alone in her house when an intruder entered. He was a 6’1″ caucasian male wearing a black balaclava and carrying a candlestick. As my sister approached him, with the dog barking around her heels, she heard a distant car crash which led her to have a fatal … etc.” (This is not an actual excuse I received, just similar in detail to some of those that were submitted.) These ones I was pretty sure were a writing exercise, requiring time and effort that could have been put to better use on the actual assignment they had been given.
I like funny OOO – but I am a bad offender regarding these and may slightly overshare. I recently had to be in and out for eye surgery and this was mine:

She continues: “However, there should be a way for whoever is emailing you to have an urgent request handled, and that should be included as part of your OOO as well as being known to your work team (supervisor and colleagues). That might look like including a coworker's email on your OOO or it might simply involve setting a forwarding rule for while you're away, so that your email goes to the colleague who's covering.”
If you need immediate assistance during my absence, please contact [contact’s name] at [contact’s email address]. Otherwise, I will respond to your emails as soon as possible when I return.