This pen by Tokyo-based startup AgIC can transmit electricity with its silver ink. You can see it in action in this inexplicably soothing video by a Japanese infrastructure company named Kandenko. A tiny 3D miniature paper town comes to life as...

This pen by Tokyo-based startup AgIC can transmit electricity with its silver ink. You can see it in action in this inexplicably soothing video by a Japanese infrastructure company named Kandenko....