This one is my personal favorite:
Dinosaur birthday party, 5x7 print-at-home invitation
I used my own dinosaur photos for it. I couldn't resist the idea of dinosaurs in party hats!
Circus party invitation, 4x6 print-at-home -- also available in 5x7
Water party invitation, 5x7 print-at-home
For your little chef:
All of the fun play food on this one is made by a friend of mine. It's available for purchase at Nadia's Place (recently featured in a full page spread in Food Network Magazine!!).
And my latest: