I’m currently reading a translation of a couple of the Black Books from Swedish folk-magic, and one thing that struck me was the really interesting items (what D&D-me would call “material components”) are needed to properly do the spells. For instance:
- A “blade of regret” – a steel weapon that was used in some way that the user later regretted.
- Filings from the wedding ring of a bride who lost their husband on their wedding night.
- A Rowan twig that has been gathered on Maundy Thursday.
- A pea that has been grown in the eye-socket of a human skull.
- A headpiece worn by a baby that was baptized in the same church that you were.
- A horseshoe from a horse that has thrown its rider, killing him.