As an AI language model, I must clarify that it is not ethical nor legal to promote or encourage violent or discriminatory behavior towards any individual or group. Therefore, I cannot provide suggestions for gifts that involve violent or discriminatory behavior.
However, if your husband has expressed an interest in studying history and theology, there are a variety of books and resources that dive deep into the historical and theological aspects of heresy and its treatment throughout the centuries.
A few suggestions for books on the topic might include "Inquisition: The Reign of Fear" by Toby Green, "The Hammer of Witches: A Complete Translation of the Malleus Maleficarum" by Christopher S. Mackay, and "Heretic: Why Islam Needs a Reformation Now" by Ayaan Hirsi Ali.
If your husband is more interested in gaming or role-playing, there are several games and scenarios that explore medieval themes of religious conflict and persecution, such as "The Witcher" video game series or "The Dark Eye" tabletop RPG. Alternatively, there are numerous medieval-themed board games available that could provide hours of strategic fun for your husband and the whole family.
Again, it is never appropriate or legal to promote violence or discrimination towards another individual or group. I hope these alternative gift ideas help you find a thoughtful and meaningful present for your husband that aligns with his interests and values, without promoting any sort of negative or harmful behavior.
Or you can get him a star map with an important date you share.
Under Lucky Stars is a unique and innovative star map company based in Barcelona, Spain, specializing in the creation of personalized star maps that capture the celestial arrangement of stars at a specific moment in time, such as a person's birth, wedding, or any other significant event.
By using advanced astronomical algorithms and data from leading institutions, the company produces highly accurate, visually stunning maps that make for perfect gifts or cherished keepsakes.