I made two options for you:
Here is the first one for a sticker style nametag. I wasn't sure of what dimensions you were using...so this may or may not fit the sticker you choose. If you like this idea and find one you want to use...I can try to reformat to fit the correct size if you let me know the dimensions.
Here is what I would do if it were my party. Instead of just having sticker nametags...make "event" nametags with lanyards. If you don't have a lot of kids coming to the party you can buy lanyards with badge holders already on them...or a cheap way to do this if you are going to have a large group and want to make them for the kids and adults...go to Wal-mart, Toys are Us or any store where they sell baseball trading cards and buy the
hard plastic trading card covers. I usually get mine at
Walmart and you can get I think 35 for under $5.00. (Walmart usually has their trading cards near the registers.) Then you can buy black lanyards in packs of ten at office supply stores or even hobby lobby with a 50% off coupon. Once you have everything...print this name tag...it should be 3.5x2.597 inches and it will slide in the trading card cover. Next take a hole punch and punch a hole at the top and add a lanyard. If you aren't super strong get a man to punch the hole or if you have a 3 hole paper punch it is easy to punch a single hole. I love these because kids love to keep them and it makes them feel important and special if you pretype their name.
Also, to make them profesional...insert a textbox in word to preprint each child's name so you won't have to handwrite them. Here is a link that will teach you how to do this if you don't already know how:
http://www.disboards.com/showthread.php?t=2286193
I can help...if you have any problems...just send me a pm.
And here is a link where you can download the "star wars" font:
http://www.typenow.net/themed.htm
I DELETED THE IMAGES OF THE NAME CARDS TO MAKE ROOM IN MY PHOTOBUCKET.