Let's start with Meri Meri from UK, they have the coolest party sets!
and I love their cupcake kits, see for yourself!
Cupcake Kit contains: 24 cupcake cases and 24 cupcake toppers in 4 designs
for more ideas I love Jordan Ferney's blog "Happy Days", a San Francisco based party planner.
picture via http://jordanferney.blogspot.com/