A sunroof kit
The DIY sunroof kit shown below comes complete with glass and supporting frames (A), weatherseals (B) and all the necessary brackets and screws (C). You can also fit a deflector (D) to the frame when you have removed the glass completely for ventilation. This prevents too much breeze coming into the car. And when you take the glass out you can store it in the stowage bag (E) to protect it.