Some costumes are long past their cultural moments and yet remain stubbornly prevalent, making them less "throwback" and more "[yawn]." Please allow me to offer alternatives that, while perhaps unoriginal, aren't ubiquitous.
If I could, I would travel back to Lankenau Hospital on October 2, 2004, when I was admitted for pre-term labor. I would request an electrocardiogram (ECG) to check my heart. They checked the flux capacitor before traveling through time.
A reader wrote in to ask about this very issue, whether the famed "To Be Continued..." at the end of Back to the Future actually appeared in the original film or if it was added later and people just have convinced themselves that they saw it in the original film.