Traveling with toddler

I have not traveled with our toddler yet, as In overnight stays. I was wondering what are y’all using for them to sleep in while traveling? Pack n play? And if so, do you recommend a certain one?

He is still sleeping in his crib with no attempts to climb out yet. So I would be worried to put him in a bed without any sides yet.

Thank you,

Overthinking, worried mama