This is what I used to attach the hairs to the scalp. It looks just like a tiny version of those "latch-hooks" for making rugs. You can also use a regular crochet hook, but the knit-picker has that swinging latch which helps to keep the thread on the hook while you
Knitting Tutorial for picking up underarm stitches on the Metamorphic Sweater
Dritz Knit Picker, Latch Hook, 3-Inch, Blue : : Home & Kitchen
Dritz Knit Picker Latch Hook for Snags, 3-Inch, Blue
Knit Picker, Hobby Lobby
Everything I knit pills like this after a few wears. Is this normal or is it the yarn brand (Knit Picks)? : r/knitting
Chunky Knitting Pattern Six Stitch Sweater
Dritz Knit Picker Latch Hook for Snags, 3-Inch, Blue
How to Pick Up and Knit Along Stockinette Stitch
A Breath of Spring – in Winter (and a Give-Away!) –
A Hat Knitting Pattern for Big Hair – Knitting
Dritz Knit Picker Latch Hook for Snags, 3-Inch, Blue
Knit picker, length 80 mm - TEXI 4049 - Strima
Knit Picker