Hallmark spread the word of the release of The Next Generation’s Enterprise NCC-1701-D ornament in 1993 with a 3.25″ promotional button. A similar promotional button for another Enterprise ornament was distributed earlier this year.
Hallmark gave away souvenir buttons back in September at Star Trek Mission New York. The buttons feature the 2016 50th Anniversary “Pilot” Enterprise with gold finish. You can still get the ornament in stores this month but good luck finding a button anywhere.