Take your party guests back to the 1950s by creating an atmosphere that looks like a diner in the USA from the '50s! Tell guests to dress up like they're in the '50s. Host the party in a diner or bring in furniture that looks like a diner. Play all of your music from a jukebox and encourage guests to pick their own songs. Serve up burgers and fries with a twist (bite-sized burgers, fries with truffle sauce, etc.) This theme goes great with National Holidays (such as Memorial Day or the 4th of July) but can be celebrated year-round, for any reason.