My invitations are in DD's room and I don't want to go in and open her squeaky drawers
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but I used Cristina Re stationery to make mine (the range is in Warehouse Stationery). I also bought the Cristina Re software CD which basically has all the templates and you just pick what kind of invitation you want (style, size) what font, colour of font, where you want the font, etc etc. It even has wording ideas - lots of them, which was awesome. Then you just print, cut and assemble - so easy. It was so much fun to do, I loved it!
Here's a link to the google image search of Cristina Re for some ideas, all of the 'made' ones I remember seeing on the CD available to make. Sorry I couldn't help more!
Cristina Re