Fill your iPod with tons of great music from the era and get appropriately themed invitations.
You may decide to take it a step further and make costumes mandatory " everyone has to wear clothes from the decade you choose.
People always remember a costume party and the pictures come out great to boot.Music: Oldies but Goodies!
Runaround Sue
Mr. Lee
Rock Around the Clock
Blue Suede Shoes (Hellooooo, Elvis!)
Duke of Earl
anything by Buddy Holly, Richie Valens or the Big Bopper
and of course, The Twist
Invitations You can use Celebration.com's Plan Your Party tool to customize your invitations with images that reflect the 1950s: Poodle skirts, ice cream sodas, juke boxes, the possibilities are endless!
Costumes Bobby socks and saddle shoes anyone? Or perhaps the letter sweater from a handsome young football player of the era.
TIP: Google Image "1950's attire" to come up with other great ideas.