If you're completely broke like me, I can tell you that this is what I bought.
One of these:
https://a.co/d/7zJ242h
I slept on it once and it was comfortable. I'm 6'0" 220ish.
My 9 year old boy slept on it the next night. He was fine too.
Pros: It sort of has a built in pillow and an external 'pump'.
Cons: It's about 2 pounds.
I also bought one of these:
https://a.co/d/fVNVdzJ
My daughter slept on it one night. It did fine, so I slept on it the next night. I was perfectly comfortable.
Pros: It only weighs about 1.1#.
Cons: No built in pillow.
We're taking two of the latter out west with us next month. I'm keeping the former pad for car or local use.
Again, please understand that those are *budget* options and I am not intending to compare them to better brands, certainly not in terms of longevity. If they fail on us mid-trip I'll be miserable.