How about using/making ornaments out of miniatures that SUGGEST past productions?

For example, if you've done "Oklahoma" you could hang a miniature cowboy hat, surrey or flag with the production title and date carefully painted or drawn.

Likewise, "My Fair Lady" might be represented by a London Bridge or grammaphone. "Deathtrap" could be a tiny typewriter, crossbow or Houdini handcuffs.   The possibilities are endless.

Use your imagination and browse the aisles of your local Dollar Store or Hobby Shop, searching for interesting (and cheap) pieces.

Fun Stuff! with a little bit of pride in our theater and slightly off topic, last night was our city hallloween parade (big deal here) and a few of our folks put together a float with a theme of advertising our remaining show season and pumping the first show of our next season (Oz). Then members got together, put on appropriate Ozian costumes, rode/walked, handed out flyers and candy and walked away with the "Best in Show" award... Good luck in your competition, and I agree with those that say, "use it to advertise!"