SpongeBob SquarePants PARTY INVITATIONS :

Cut a starfish or pineapple shapes from pink or yellow card stock paper.

On the front write:

" I'm ready, I'm ready, I ready to celebrate my birthday! "

Add party time and directions on the back of the cards.

If you can afford it, as an extra fun treat -

Deliver your invitations with
a small bottle of bubbles or small SpongeBob ( or other characters from the show ) toy. - SpongeBob, Patrick, Sandy , Squidward , Mr. Crabs , Mrs. Puff, Pearl, Plankton, etc.