Best materials for wall cladding

Hey forum, I am in the process of converting my van into a camper van and am looking at materials to clad the walls with. I would like to use a tongue and groove wooden slat for the walls but am conscious about the weight and also thickness. Ideally looking for lightweight and as thin as possible. Can anyone recommend some good options here please?

One option can be composite cladding, which is also lighter than real wood and comes in a variety of finishes

Ahh great suggestion thanks I will definitely look into this

I second composite. Cheap and durable. Easy to fit too.