You will need

Blue Hat
4-6 years - 1 Ball
7-9 years - 1 Ball
10-12 years - 1 Ball
Adult - 1 Ball

Pink Beret
4-6 years - 2 Balls
7-9 years - 2 Balls
10-12 years - 2 Balls
Adult - 2 Balls

Beige Beanie
4-6 years - 2 Balls
7-9 years - 2 Balls
10-12 years - 2 Balls
Adult - 3 Balls

Beige and Blue Beanie
4-6 years - 1 Ball of Shade A and 1 Ball of Shade B
7-9 years - 1 Ball of Shade A and 1 Ball of Shade B
10-12 years - 1 Ball of Shade A and 1 Ball of Shade B
Adult - 1 Ball of Shade A and 1 Ball of Shade B

10mm and 12mm Needles