This is a 3D model of a Lego ship that we made (over and over) when we were kids. For some reason, the simplicity of the space craft facinated us. We made many other spaceships, but this one stuck with me for some reason. Here's how it fits together.
The image below shows the pieces required. They are (from left to right): thruster, jet booster, seat, and steering wheel.
This next two images shows it going together.
Finally, here's the ship fully assembled.
Here's how the ship looks with a Lego Astronaut on it.
Finally, we also had an alternative version where the thruster is a gun. I don't know if I like this one or not. It would definitely be more useful in a hostile environment, though.
I've also saved the Blender mesh files below. Feel free to download and use them.