Back in time..

Back in July 1985, shortly after graduating (which makes me feel old), I went to Doncaster to visit my friend and contemporary Conor (now an award-winning author and Professor of Medieval History) and we went to the nearby cinema to see a movie about a character travelling backwards 30 years in time and then forward 30 years at the very end.
His time machine was a de Lorean car, and the date that he travelled to in the future will be reached next week...

Back to the Future day is October the 21st.

A few teachers on Twitter have been considering what they might do to mark this in lessons. I'm not quite sure what to do yet, and may actually run out of time to plan anything other than wear a gilet.... which isn't too creative.
That time is actually the very end of the school day, so I may just play the theme tune as students leave, or perhaps try to hide the flux capacitor into as many PPT slides as possible... or something else completely...

Any geography-related ideas come to mind?