See my blog post about the party here!
Curious George (both the Classic one and the PBS television one) and bright, primary colors
Eclectic -- it depends on the occasion. For kids' parties, I love classic/preppy, cheerful, and bright.
Invitation, Banner, and Favorites/Milestones Chalkboard -- by me (find here in my Etsy shop, Eastwood Eclectic)
Invites and Coloring Poster -- printed via VistaPrint.com
Curious George paper plates, cups, napkins, cake topper, confetti, and balloons -- Party City
Birthday shirt -- DIY, sewn by my Mother-in-Law
Photos -- by me
Search Pinterest, Etsy, and Project Nursery for ideas early, and then pick and choose from many sources to create a unique party that is perfect for you and/or your child :)