I created this earlier on in the year because my husband was having nightmares about Erlkonig taking our children away. I researched the herbs used for a long time. I'm not going to write any particular spell, because I made something up just for my husband.
Lavender petals- sleep, protection, peace
Primrose petals and/or rosehips
Rosemary- for protection
Cinnamon- healing (he was greatly harmed by these dreams psychologically)
Clove- for protection, purifying, removing negative forces
Sage- for purifying and protection, removing negative forces
As you can see, I focused on herbs that promote peace, protection, and added a LOT of lavender to the sachet so that the aroma could be smelled, along with the other herbs and plants. I combined these in a cloth that allowed for the aroma to pass through (I believe I tied off a piece of cheesecloth with ribbon in this particular instance).
I said my spell and placed it on his pillow for him to place under.
I had to do this twice and then my husband had no more dreams about Erlkonig taking our children anymore.