Whereas most of us may never fully grasp the meaning behind the testicular descension metaphors and self-referential glyphs woven throughout Matthew Barney's Cremaster Cycle, the message behind his Drawing Restraint series — which has seen the artist challenge his creation process with obstacle courses and 270-pound dumbbells — couldn't be more relatable: creativity flourishes in any struggle with limitations. Many designers, for example, profess to do their best work under the pressure of client briefs; then there are those, like the London duo Bernadette Deddens and Tetsuo Mukai of Study O Portable, who in the absence of such briefs will invent their own rules to work around. Since they started their studio in 2009, the couple have been using the alphabet as a testing ground for aesthetic and material experiments, producing letter sets in various combinations of wood, leather, and plastic that must conform to strict, self-imposed standards of size and legibility. "It's really satisfying to work on the puzzle an ABC poses depending on one's materials and techniques," says Deddens. Their most recent is the Neon Alphabet, "a cross between signage, jewelry, and a font" that debuted at Design Miami/Basel this June with Belgian gallerist Caroline van Hoek.