Lol, amazing ideas!
Here's a few of my own (ok, people I know) elevator stories.
1. Jump up and down until you freefall two floors and are jolted to a stop and arw rescued. That really happened to 5 of my friends.
2. If your at top floor of a 25 floor hotel, wait for someone to get on, press EVERY button, then get of after one floor. Some people I knew had security lookin' for em after this.