i like the diner idea. maybe take inspiration from Hopper's painting 'Nighthawks', or give it a Pulp Fiction makeover.. lots of great movie moments have taken place in diners ;)
Pick a scene or concept from one of your favorite games Create a scene inspired by one of your favorite games Recreate a cool picture or scene from a movie Pick a cool piece of architecture Just find something cool that you think you can stay excited about and get to it!