1 Samuel 19:13

13 And Michal took the talismans, and laid them in the bed, and put a pillow of goats' [hair] at his head, and used a blanket as a covering.[fn]

Footnotes

talismans - see footnote at Genesis 31:19.

his head refers to where David's head would be on the bed. It does not necessarily indicate that there is any feature of a head on the talismans. Also in verse 16.