You can make these Cute Christmas decorations in three different sizes
They are knitted around ball pool balls and ping pong balls.

Small – 12.5 mm (ping pong/table tennis ball)
Medium – 17 mm (small ball pool ball, mine were from pound shops in net bags of 15.
Large – 20 mm (regular size ball pool ball which I have found in supermarkets and charity shops.)
They are a great way to recycle plastic balls.
You will need oddments of double knitting yarn flesh, red, white and green
sirdar snuggly in white for trimming the hat
2 sew on googly eyes 8 mm, 10mm, 12 mm

For the eyes you can also use, beads and sequins or you can embroider the eyes. They are designed as ornaments and not as toys but please consider safety when choosing your eyes and sew all small pieces on securely

I use them to decorate at birthday parties and Christmas time.
Note the small and medium sizes are knitted on 3 mm needles and the large is knitted on 3.25 mm needles unless otherwise stated.