riddles wrapped in a mystery inside an enigma Sandwich customer puzzled by handwritten message on wrapper Mark Frauenfelder
useful stuff Excellent cheap puzzle book: The Moscow Puzzles: 359 Mathematical Recreations Mark Frauenfelder
books Ready Player Two: read an interview with Ernest Cline and listen to his soundtrack for the book David Pescovitz
Boing Boing Gadgets Flip your flapjacks & omelets in style with this twin-skillet design Boing Boing's Shop
science fiction Here's your chance to buy the Kindle edition of Dan Simmon's essential science fiction novel Hyperion Mark Frauenfelder
happy mutants Puzzles that teach the fundamentals of crypto's essential, elusive zero-knowledge proofs Cory Doctorow
psychology The strange, mutating story of "willpower" and what we think it might be as of right now Cory Doctorow