I tend to bring my AppleTV + HDMI cable with me whenever we travel.
Its small size makes it largely inconsequential from a luggage point of view and it’s already fully set up with all my streaming apps.
It also doesn’t tie up my phone if anyone else wants to watch TV.
Yeah, I'm considering a pi500 as a similar alternative. I need to check the weight, but if it's low enough and they release a version with m2 I'll surely try it.