Well, if you want to do this in a 'Pulp Fiction' style. You would need to have a car with enough space for you to comfortably hold the accordion. Place the sunshade on the side window to create a sort of film - noir like lighting effect. As you play the accordion, you could even talk in a deadpan voice like the characters in the movie. It's all about creating a strange and unique atmosphere that combines the functionality of the sunshade in the car and the musicality of the accordion, while borrowing the style of 'Pulp Fiction' for added quirkiness.
First, you could position the sunshade in the car window to block out the sun while sitting in the driver's seat or passenger seat. Then, with the accordion in hand, start playing some tunes. Maybe you can imitate the cool and non -chalant attitude of the characters in 'Pulp Fiction'. The sunshade could add a certain mood to the scene, like creating a bit of a private, shaded space for your impromptu accordion performance.
In a 'Pulp Fiction' - inspired scenario, you could set the mood by first adjusting the sunshade to just the right angle in the car. It could be a sunny day outside, and the sunshade gives the interior of the car a dim, cool - toned look. Now, with the accordion, start playing some jazzy or off - beat tunes. Imagine you are a character in a strange, Quentin Tarantino - like world. You might be waiting for someone, or just passing the time. The sunshade not only protects from the sun but also becomes part of the overall aesthetic of this odd moment, much like the unique and often unexpected elements in 'Pulp Fiction'.