V.P.
Check out this site: http://www.birthdaypartyideas.com/html/cowboy_party.html
I only looked at one party (2003 Winner), but found lots of great ideas such as having the kids decorate and wear paper bag vests, eating out of pie tins, panning for gold, and "Snakes in a Boot" (a game where kids drop rubber snakes into a boot). The "Wanted" invitations sound adorable, too.
Good luck!
www.familyeguide.com Free guide to affordable family activities in Lewisville, Highland Village, Flower Mound, and the surrounding communities.