Forget old-school shelf liners—today’s self-adhesive wallpaper works as well off the wall as on and comes in pretty patterns, like the speckled terrazzo motif that gives this shelving unit faux-stone appeal. (Imagine how it would look on a tiered coffee table too.) It’s also foolproof to apply: Measure the area you want to cover, trim the paper to fit, remove the backing a little at a time, and press to adhere. If it wrinkles, simply peel back a few inches and proceed. If you’re concerned about watermarks, top with glass cut to size.