You can print a free party pack at Paper Coterie. This includes banner, cupcake flags, invitations and place cards.
The set is actually for a baby shower but I think some of these items could be used for any party- particularly the cupcake picks and place cards. These are so bright and cheerful- they would be fun for an end of year class party too!
I usually like to send things like this to Staples to print. It’s about $.50 for full color on nice paper.