How about something fun to add the right touch to your party? Party hats! They can also serve as your treat bag and just fill up with candy at the end of the party or use them to fill up with candy from the pinata.
Papersource.com has a super simple party hat but so cute, if you have older kids, they can actually help make the hats too. Feeling crafty? Ohhappyday.com shows you how to make fun party hats that can be done in any scrapbook paper to match your theme.
I got a little excited when I saw this party hat made with a real ice cream cone from Onecharmingparty.com. This is perfect just for the birthday girl or give them as the party favor. If you're having a summer party, you could always do an ice cream theme and have the kids make their own sundae's or floats too!
Party hats are cute and fun just kept simple or embellished to your heart's content. You could likely go non-frugal with any of these but keep it simple and get the kids involved and it will be a blast!