Birthday hats sound great. I was going to buy Kai some but I knew he wouldn't keep it on for more than 3 seconds. You should try balloons. Blowing up 10 or so (more is even better) and letting the doggies chase them down and popping them.

I was going to try making a sort of birthday cake out of yogurt and some fruits on top and maybe some other stuff...but I decided to just buy one lol.