The effect is subtle, at first – one could almost miss the writing on the wall, particularly once it is piled with stacks and rows of colorful books. Still, lingering in the background, a nearly subliminal message that you can spell out in modular do-it-yourself shapes.

Eva Alessandrini and Roberto Saporiti co-designed this cleverly readable series of stackable shelving units featured on Saporiti.net. Each letter of the alphabet is to be available, as well as numbers (0 through 9, which can of course be assembled into part of any alphanumeric string as well).

Black and white are one set of options, but colors are possible as well. Rows and columns present endless creative possibilities. Of course, this is pending mass-production, but you can always contact the designer to see about a special exception, too.