Birthday Thumbprint Guestbook @Andrea Dihel - for Corbin's bday, you could do Cat and the Hat and put something like All of Corbin's favorite things came to celebrate his 1st Birthday. Do blue thumbprints and make them look like Thing one and Thing two.
For his 11th birthday, my son wanted his own backyard American Ninja Warrior Birthday Party competition! So we set about constructing a course in our backyard that matches the American Ninja Warrior theme and challenges, at a level that kids can actually do. Here's how we did it: