I buy CD's. Mainly from the artist. When I attend a show at the local and the performance is anywhere in the range of good, I buy what they are selling. I guess I am buying a memory as much as supporting a local performer. I do this also because I saw a friends check for streaming sales. Less than a buck. Six CD's sold at $10.00 a piece won't buy a new car but it will make the gig profitable.
With minimal investment it is almost impossible not to record a decent track on your home computer and burn a copy of yourself, for yourself.
My two cents.