Asking people to share what they enjoy / experience they really liked is another opportunity for them to re-experience what they like. A absolutely love questions that allow me to re-live a moment from my vacation, or to share an idea that gets me excited!
If you ask, as you see the person's response - if their face isn't overcome with an expression of excitement, you could continue ... "or something interesting you've seen this year ... or any new place you've been ..." etc.
It's hard to come up with a good one-question strategy that would fit all. As you know more about the person it gets easier to ask fitting questions. For example if they have a child, that's a whole basket of good things to ask - let them be proud about the kid's first steps / first year in school / etc.
You are dead on about dialing questions in after you get some responses though. But being incredibly vague and simple helps to open the conversation up. They have the ability to run any direction with the response. It works for personal relationships and professional interviews. Let the person talk and follow up from there.
If someone were to ask me what I'm excited about, my two options are "Nothing much" or "I'm trying to use Kubernetes for HPC....". Both are conversation stoppers unless the other party is a nerd.
For me, "what's keeping you busy?" works 80-90% of the time. It reaches into raw memory rather than the analytic side of a person. One can get to the latter eventually, but it needs to be a guided process.
I'm surprised by the pushback on HN. "Tell me about yourself" is a guiding principle, not a literal tactical prescription. "Those that are interested are interesting", as the saying goes.