What benefits might DIY artists offer those who make small investments in their album projects?

What will be an ideal response?

Inducements for the numerous small investors who fund an album is usually tiered, and the floor is
giving them a free CD of the new album. The next step up could be an autographed CD. Going still
higher, bigger contributions might get a prominent thank-you credit on the record or a private
performance at the contributor’s home.