Corona and Esther might be most active in the future tech club, with them presenting the results of their private research periodically to the club. Corona is only attending herbology and alchemy as it reminds her of her old life as the village apothecary. She still has an interest in medicine but she believes the most effective way of treating all sorts of illnesses are by inserting nanites into your body that would fix them for you instead of using some magic cure-all potion.

If it's allowed, I'd like to make Corona the head of the future tech club, with Esther as her vice-president.