Creative party themes should be centered on the taste and likes of the guest of honor. For a younger girl try princess, Barbie, or any Disney theme. Boys love trucks, planes, space, and cartoon characters. Music or sports themes for teenagers are best. For adult themes sports are good, so is decades, such as 1970 rock n roll party, Hollywood is a fun theme, so is a fiesta or luau theme.
. Invitations, decorations and games can all be centered around the theme. For adult parties pair the food with the theme. If you're having a fiesta, make chili or tacos. Hats are an easy, inexpensive and fun way to add a theme to any party. When everyone puts on a straw hat, a plain old barbeque becomes a fun hoe down. As long as you work the theme around the guest of honor, your party will be a success. Here's great site for all types of party themes: http://www.theme-party-palace.com/index.html