As a recently elected member of the board of trustees of the Society of King Charles the Martyr American Region, one of my duties is to try to increase membership from among the monarchist community. I would be delighted if I were able to recruit any of this forum's North American members into the Society. Membership costs very little ($15 a year) and will connect you to one of the few monarchy-related organizations in the United States that actually holds regular organized events. The Society offers a list of goods to purchase, many of which pertain to King Charles and the Stuarts. Information on joining is available at the above website. You do NOT have to be an Anglican to join. Please feel free to ask me any questions about the Society on this thread. I have attended SKCM national masses in 2002 (New York), 2006 (Charleston), May 2010 (Omaha), 2014 (Fort Worth), and 2017 (Philadelphia), and was always glad I did.
Members in the UK may wish to look into the original SKCM.