natural

Hi out there, Can anyone suggest an alternative to lining my van with carpet. Has anyone used a natural material?

I've started a thread elsewhere but I'll copy it all to here so it's in the right place!!...... Well, I sold my white '08 T5 after converting it to a camper and felt lost without something on the drive to tinker with sooooo I bought this.... :::::::::::::::::::: 2010 T28 102ps with 70k...