Here’s a simple but very cool USB plug concept design. Why no one has thought of it before, we don’t know. It should certainly solve the problem of running out of USB ports on laptops. This USB connector has both the male and female connectors, so you can daisy-chain several together and live happily ever after in USB toy land.
Of course, they would get unstable very quick once several are plugged in. The color coding is a nice feature though. This could be very useful.