"No toxins" You can drink fabric softener? It is very unlikely to be non-toxic.

Spackle will chip off and show nail rust from moisture coming through the wood. Much depends on how much movement the house undergo's. If oppisite side of walls are sheetrocked and not cracking,sheetrock would apeal to the majority. Wall paper is available to memic almost any surface emaginable. The wall as is appeals to many and is by far easiest if you like it. If you keep the boards,don't try and make them look new. Just remove most paper and cheese cloth,pull only nails that have exposed heads making them quick and easy to remove. Stiff brush and vacum dust from boards,vacum ceiling,windows and floor,then wet mop floor to prevent trash floating to stick to finish while it's wet. Choose a clear finish you can handle in gloss level you like and put it on. I'm thinking semi-gloss,oil base varnish (not polyurathane) rolled and/or brush applied. Bring in a small amount of rusty barn tin,maybe a faux rough beam or two,some window film in stained or water glass and start looking for furniture and accent items. The doors,door trim,baseboards and windows can realy make it complete. What you do with them depends on what type you have. Woo Hooo,this gonna be fun. Sorry bout that. Any of that help?

IMO, wallpaper never goes out of style, it's the most classic way to decorate! Here's a website which I ordered a sample of my future wallpaper from, they sent me a large sheet and I love it. BTW, I have wallpaper in the bathroom too, and I just love it. I don't know how to do a hyper-link: http://www.seabrookwallpaper.com/ Here's the wallpaper I'm putting on one large wall only, in the dining room. It will have white/cream beadboard below it while the rest of the walls in there will be painted THE lightest yellow I can find. I'm more excited about this wallpaper than I am with the other remodel! lol http://www.seabrookwallpaper.com/products/default.aspx?t=2&styleID=19&subjectID=165&patternID=8447&search=

@Patricia Colwell Hi Patrice. Your comment was rude; I didn't ask for your approval on the wallpaper. I asked for help finding it, unsure what other information I could have given to help you find the paper since I provided a detailed photo. Thanks to @Jinx @One Devoted Dame for their help and for giving me exactly what I had requested. The comment that he is old enough to decorate his room was strange; I am sure that I am not the only mom on here that their son's like to have them decorate for them. Have a nice day