A scroll through similar online retailers reveals a spell for every occasion, including spells promising to keep the rain away on your wedding day or to help you get tickets to a sold-out concert.
A spokesperson for Etsy told BBC Scotland they have seen “growing interest” in “magical touches” for occasions like weddings.
They said searches for spells for people trying to ensure sunshine on their big day have grown by 206% while general searches for wedding related-spells and witches are up 105%.
Whether they can actually deliver is another question entirely – in fact, Etsy rules say spells must be marketed as for entertainment purposes only.
For Cahill, it’s not all about doing business.
The 24-year-old says that young people – though they are very used to thinking logically – are looking to believe in something magical.
She says that a lot of younger people feel lonely, and she wants to be a “safe space” for people, and to give them comfort.
“As humans we need to believe in something that is bigger than ourselves,” she said. “Curiosity is natural.
“I think a lot of the time people know the answer they want, but are just looking for a bit of reassurance.
“Even if magic isn’t real, if it helps someone feel more confident what is the harm?”