Birthday party

So it's my 26th birthday on Sunday, and my friends and I are throwing a soiree. The theme: A 50s cocktail party, heavy on the kitsch! (Really, my friend Kris just wanted an excuse to wear her pretty new dress!)
I've found a few Web sites that have retro recipes, and I've started gathering ideas for the (vegetarian) menu:
Tang martinis
Veggie meatballs (anything on a toothpick is perfect cocktail party food)
Sandwiches with the crusts cut off
Mushroom pate
Cheese straws
Jell-O salad
California onion dip
Chex mix (I have this childhood friend whose mom is a perfect June Cleaver clone. She always served us Chex Mix and Tang! No joke!)
along with some more modern items: hummus and homemade guacamole with vegetables, a pesto whole-wheat pasta salad and mini pizzas (whole-wheat crust from Trader Joe's!)
I've got a great polka-dotted dress, and my boyfriend is in charge of music. Check out the foodtimeline for fun food facts. Ooh, and I can make old-school punch. You know, the kind with 7-Up or Sprite, fruit punch and sherbet!
Any other suggestions? I didn't live through the 50s, so I don't really know what sort of fun foods to make. What about cocktails? Any suggestions?