Replying to Help! Contest PSA ideas.

Sorry for the long post...
I am a senior in high school and my broadcast teacher showed me a video contest that has been going on. There are two age groups (K-6th grade and 7-12th grade) with 3 categories of content (Healthy Choices, Celebrating Diversity, and Creating Character)each. I am allowed to enter as many videos as I can until February 20th. I come to newschoolers because I know it is a very creative community and I'm sure many of you have some decent ideas.

My first entry depicts a friend of mine eating junk food and playing xbox and he recieves a phone call from "Life". He then hangs up. Same thing happens again at the computer as he further wastes his life away. He hangs up. Then the same noise is heard and the phone isn't ringing. He then walks to the front door and walks out as some text fades in saying "Life is calling... answer the call."

That's my idea. Wondering if anyone has any other ideas? They can be very simple or complex... whatever's good.

Thanks for any help!