Do you have one of those d#%n Linden houses like I do and not sure what the heck to do with it? I tried putting artwork up, but I'd chosen one of the Japanese houses and ... well, it just wasn't working. So I changed the interiors (with the magic wallplate) - and half of the prims on my furniture disappeared. It all came back the next time I visited, but it made me say several naughty words.
Anyway, I think I've found the solution to the naked walls: Floral Wall Decals from the Wine and Roses Mainstore. You buy one decal and slap it on your wall (taking care to make sure you have it decal side towards you because it's invisible on the other side ... man, I've searched for lots of things like that ... and said naughty words. It would have been nice to know ahead the object would do that (maybe I should read the notecards more often). And, Presto! you have a wall decoration you can copy over and over on all your walls, the floor, wherever. And, and, there are five patterns in the decal you can click on to change. Four are pictured in the photo above.