I used two pieces of American Crafts cardstock I picked up at Michael's for $.12/each and pieces of scrap red & yellow cardstock. I also remembered my awesome Cuttlebug embossing folder with random numbers that I love to use on anything related to birthdays. The aqua blue square was punched using my Nestabilities dies and is actually the reverse side of this American Crafts patterned paper. The yellow tab was made from the Stampin' Up round tab punch, another favorite. I placed the tab on the left side of the card so that the girls would know how to open the card.
Here's a shot of the inside which expands to reveal all of the party information. This was easy using the computer and a journaling font.
The next thing I had to decide was how to encase the card inside of an envelope. The yellow tab made that a little tricky. I decided to use a white CD envelope. I sliced the flap off with my X-acto knife and slid in the invitation. I think I will print the recipient's name on a round label and attach it to the front. All together these invitations were less than $1.00 for 4. Nothing like having a week to plan a party....it's easy with simple projects like this.