You will need:

Ribbed Scarf:
4-6 years - 2 x 100g balls
7-9 years - 2 x 100g balls
10-12 years - 2 x 100g balls

Pompon Scarf:
4-6 years - 2 x 100g balls
7-9 years - 2 x 100g balls
10-12 years - 3 x 100g balls

Leg Warmers:
4-6 years - 1 x 100g balls
7-9 years - 1 x 100g balls
10-12 years - 1 x 100g balls

Wrist Warmers:
4-6 years - 1 x 100g balls
7-9 years - 1 x 100g balls
10-12 years - 1 x 100g balls

Hat:
4-6 years - 1 x 100g balls
7-9 years - 1 x 100g balls
10-12 years - 1 x 100g balls

Mitts:
4-6 years - 1 x 100g balls
7-9 years - 1 x 100g balls
10-12 years - 1 x 100g balls

- 1 pair of 5mm knitting needles,
- 1 pair of 4mm knitting needles,
- 1 pair of 3.25 knitting needles.