Oriented strand board (OSB)...for flooring: sand it down and clear coating it for a look
OSB board as an interior wall - cheap and reasonable insulation
Shiny, concrete floor contrasted by the warm, chaotic pattern of the wood wall surface.
concrete floor with variations in grey
like wall polish floor combo looks good
Love the chalkboard idea. Especially the green board, with light wood frame. Plywood wall to left is also kinda clever,
osb board sanded and clear finished
strand board (OSB) is normally found sheathing the exterior of homes before the siding goes up. It creates an interesting pattern and is quite textural. I've used this material for flooring, sanding it way down and clear coating it for a look that mimics cork.