Needles: 3,5mm
Yarn: 1 strand of fingering weight and 1 strand of laceweight mohair

How:
Cast on 40 stitches (leave a long tail for sewing later on)
Knit in the round for 30 rounds
Cast of (leave a long tail)

Sew one side of the cushion, fill it (wool, scraps, fiberfill, pieces of fabric) and close other side.

Variation (see pictures red version):
Cast on 40 st
round 1-8: Knit
round 9-22: Knit 14 st, next 12 st in seedstitch, knit 14 st till end of round
round 23-30: Knit
Cast of