An Australian company that makes cycling mirrors which you wear on your forearm contacted the club recently and offered a 15% discount to any EBC member who purchases one of their products. They also sent me a sample to try.
I suspect everyone in the club who currently uses a mirror is satisfied with what they’ve got, but if anyone would like to experiment with an arm-mounted mirror, let me know and we'll figure out a way for you to take it for a spin. The discount probably is meaningless as the prices seem better on Amazon than directly from the company.
If you want to check it out further, see here: https://www.rearviz.com