Here's an idea: legally record live performances and share them. Save the intense, funny and/or epic moments, unusual versions of songs, little mistakes and on stage jokes. Share them with people who were at the venue, these who wished they were there or just strangers browsing through random stuff. Make people smile.
Most artists don't like the idea of recording their concerts with equipment other than pro. Most people won't understand why would you listen to noisy, unmastered sound when you can reach for a studio album. And most of the time your recording won't be as good as you wished even if you do your very best. But if you succeed convincing the band and manage to capture the gig, you'll be happy. Even more if you share it.
All my productions are licensed under the Creative Commons Attribution 3.0 License. Please contact me if you want to use any piece of my work.