Birthday Party

So, Elizabeth is having her birthday party with her friends this week.  I only invited three (four? one is the baby brother of one of the other kids, but Elizabeth looooves him) kids and their moms.  (For simplicity’s sake, it is a weekday party.)  Basically, this is a playdate with cupcakes.

But, as I am awesome and Elizabeth is awesome, it is still going to be an awesome party.  So my question to you is: what are the most memorable things you have seen at a kid’s birthday party?  (And, um, Holly and Courtney, you are not allowed to read this post until after you come to the party.)