Perhaps your organization could organize a teen disco and lay on buses to collect the young people and leave them home. You can charge a few dollars for the bus and then an entry fee of $5-$10.
You can sell soft drinks at the disco. These are really good money makers as fundraising events, and you could even consider running them regularly.
There are many community organizations that run them regularly and make a great regular income out of it. They also work as one-off booster fundraising events.