Karakuri are mechanized puppets or automata from Japan dating back to the 18th and 19th centuries. The word ‘Karakuri’ means a “mechanical device to tease, trick, or take a person by surprise.” Japanese designer Keisuke Saka created this papercraft kit series filled with surprises and a dose of dark humor. Doomed is one fish’s Last Stand—rotate the wheel and watch it flip one last time in resistance to the chef’s knife. Mr. Saka is one of Japan’s most honored paper engineers. His thoughtfully rendered designs use the fewest moving parts to communicate their magical, elegant movement. Cutting, folding and gluing required in assembly. Each one takes less than two hours of time to complete. Completely instructions included. Surprisingly robust if correctly built.