The United States Postal Service came up with a winner recently with a Janis Joplin forever stamp available in panes of 16. It's done with 1960's psychedelic-style ornate letter like might have appeared on a poster. At last, there's a positive recognition of the counterculture of the 1960's. Get a few panes and use them for personal mail.
Here's Janis Joplin (1943-1970) performing "Piece of My Heart":