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Build It: The Electronic Post-It Note

Pick up milk. Feed dog. Finish homemade nuclear sub. Like many people, I cant function without writing little reminders to myself. But using one paper sticky note after another causes a lot of clutter and can be pretty wasteful. Instead, assemble a bunch of surplus parts into a digital note system for your kitchen or office. Just write out your message with your fingertip on a computer trackpad, and it appears on an LCD screen.