Themes take the hassle out of event decorating because they offer easily recognizable, tried-and-true options. If you're doing a carnival theme, you know bold colors will work, adding a few wild animal posters will be safe bet and a popcorn machine in the corner won't look silly. If you want to take a worn out theme like "Spring Fling" and make it your own with an interesting twist, you'll be showing your creativity without having to invent everything from scratch. You'll have lots of built-in ideas to guide you. Themes are everywhere. Pick one and see what happens.