One of my barns has gotten a bit rotted out. I am going to tear it down and rebuild, or at least replace the walls & ceiling (it has a concrete floor). Would you toss out the old boards in the interest of safety or would you consider making a prop or shelf with these authentically weathered/aged...

I just finished boarding up the windows of the house... You know, to keep out the Zombies... Some nice foamboard planks there. I'm at work and we just had a huge storm blow through... We've had virtually no rain or anything since July... I'm afraid to find when I get home. Keep your fingers...