Since you are probably working with a group of students or a music-minded community that needs to raise money for equipment or a trip you all are taking - a group event is the best way to go to fundraise. It allows you to entertain others and show off your group's skills. I think most people are more likely to pay for an event to be entertained, rather than pay for a raffle or t-shirt that they've done many times before.
It's about time to pick your Christmas Music Performance theme and setup for your production. We're at the start of the holiday season as we fly past Halloween and move into Thanksgiving. You're either in two camps right now. The planner who decided their Christmas show weeks ago. The last minute person who could use some ideas to get the ideas flowing, but really won't work on the logistics until the last possible hour.
Many of my peers in the mid-20s age group notice having a hard time making friends. When we were in school, we had an automatic community of people we saw every day. Now in jobs, we have a group of people we interact with and connect with week to week.