A baby shower with polka dots as the theme guarantees the fun will be spot-on. And a simple graphic theme makes it easy to coordinate decor, favors, and food.
Decor and Favor Ideas
Cranberry Sparkler
Coconut Cookies
Swirly Cupcakes
Mini Frittatas
Broccoli Rabe Dumplings
I love the polka dot theme and this card would be so cute with it, http://www.babycachet.com/Dot_Party_Baby_Shower_Invitations_p/mdds0744.htm - it creates a fun theme so guests know what to expect.