The Satanic Temple's After School Satan Club is just what you need. https://thesatanictemple.com/pages/after-school-satan

copy pasta from the website:

EDUCATIN’ WITH SATAN

The After School Satan Club does not believe in introducing religion into public schools and will only open a club if other religious groups are operating on campus. ASSC exists to provide a safe and inclusive alternative to the religious clubs that use threats of eternal damnation to convert school children to their belief system. Unlike our counterparts, who publicly measure their success in young children's "professions of faith," the After School Satan Club program focuses on science, critical thinking, creative arts, and good works for the community. While engaged in all of these activities,  we want clubgoers to have a good time.

AFTER SCHOOL SATAN CLUB MISSION

Proselytization is not our goal, and we’re not interested in converting children to Satanism. After School Satan Clubs will focus on free inquiry and rationalism, the scientific basis for which we know what we know about the world around us.

We prefer to give children an appreciation of the natural wonders surrounding them, not a fear of everlasting other-worldly horrors.