First, we decided to use the pink color from the kitten's bow and a turquoise accent color, similar to the butterfly's wings and the kitten's eyes. Then we started making and gathering decorations! Guests need to know where the bathroom is, so I made a "litterbox" sign to direct them:
I gathered some items from around the house - a couple kitty bowls, some yarn (kittens love yarn) and cute jars to hold the silverware.
I used the kitten clipart to make cupcake toppers.
Now that the scene was set, I needed some activities for the kiddos. Each guest got to pick a kitten to "adopt." (I bought all the kittens on amazon affiliate link). They chose a name and I helped them fill out adoption certificates. I found these certificates online (there are puppy ones too) and then glued a cutout of the kitten clipart on the top.
Once the kittens were adopted and named, they needed a place to sleep. I found this tutorial for making little houses out of foam sheets. The original instructions called for punching holes and tying ribbon to keep all the sides and roof together. I found that this was not very sturdy, so I hot glued the seams of the houses before the day of the party. Each kid was then able to decorate a house for their kitten.
The last activity before heading outside to hit the piƱata was Pin the Tail on the Kitten. I used the kitten clipart as a template and drew a tail-less kitten on poster board.