| I'd go 18mm, it'd be strong enough for a grownup — I like Austral plantation hoop pine, it has E0 glue (low off-gassing). I get it from Melbourne Wood Panels in Thomastown. Standard sheet size is 2.4 x 1.2m, maybe plan your wall around that. You'll also need a bit of framing depending on how complex you want to make the surface. Basic would be to screw sheets flat to a wall, don't forget to put the T-nuts in the back first |