Conversation starters for older relatives - please help!

[wideawakeinthemiddleofthenightagain]

My parents & PILs have been her since Friday and don't leave until Wednesday afternoon. They're all in their mid-70s with active social lives. They're also all nice people.
Can I think of anything to speak to any of them about? No! I have heard a lot about various people's health and what various of their friends' children are doing. I know their upcoming holiday plans. I already know or can anticipate their views on various political/societal issues.
This doesn't just happen at Christmas. It's whenever they come & stay. None of them live closer than 4 hours away so they always come & stay for a few nights at a time, although usually only one set of parents at a time. I don't particularly enjoy having either set to stay just because it puts the whole house in disarray, it's noisy and because it is just so intense but these are my parents/in-laws and I would like to enjoy their company. I also hate the image it is passing onto my children.
Any suggestions?

Ok, TV. Last of the summer wine, columbo, tales of the unexpected and soaps. Google them and I LL be a hit!🤗🤗🤗

Could you ask them about genealogy related questions (assuming there's nothing major in the family tree that might get heated)...it might be useful and maybe fun?

Hobbies/books/films etc?

If you've a gardener or cook in the fam they might have lots of useful stuff to talk about. If they work or volunteer you could ask about that?

Maybe it's too deep but all my older relatives have passed and I desperately wish I had asked them more questions about the past. There's so much I want to know and now there's no way to find out. Even just small things like "what did your dad do for a living?...why did the family move from this area to that one?...if you could have had a career instead of staying home with the kids what would you have done?" Maybe that's too much for a casual visit but it's something I wish I could do.

Flowerchild2000, that is really good advice.🤗🤗🤗

Really there is nothing older people love more than talking about the past ,People who were in their lives . A popular one is their teenage lives , so much fun .

Or casual convo that's in the same line of thought could be what were their favorite movie stars or singers back in the day? My dad told me his middle name came from my grandmother's favorite movie actor but I can't find anything on the internet because he wasn't a major star. I wish I had asked her before. She obviously had a crush on him and I'd love to know what he looked like lol.
Or what hobbies or games did they enjoy before tech took over?
Maybe just everyday life kind of questions. People almost always love to be asked about themselves and will go on forever once they get started. I personally love old folks stories, it's like time traveling for a little while.

Or ask about their parents and siblings - who could drive, first jobs, of course that time takes you into ww2 - my DPs all did amazing stuff during the war. (I’m 72). But talked very little about it so they might not know.