You will need

Jacket with Hood
0-3 months (16in Chest) - 2 x 50gm Balls
3-6 months (18in Chest) - 3 x 50gm Balls
6-12 months (20in Chest) - 3 x 50gm Balls
1 - 2 years (22in Chest) - 4 x 50gm Balls

Jacket with Collar
0-3 months (16in Chest) - 2 x 50gm Balls
3-6 months (18in Chest) - 2 x 50gm Balls
6-12 months (20in Chest) - 3 x 50gm Balls
1 - 2 years (22in Chest) - 3 x 50gm Balls

Hat
0-3 months (16in Chest) - 1 x 50gm Ball
3-6 months (18in Chest) - 1 x 50gm Ball
6-12 months (20in Chest) - 1 x 50gm Ball
1 - 2 years (22in Chest) - 1 x 50gm Ball

Blanket
2 x 50gm Balls

2.75mm and 3.25mm Needles
Stitch Holders for Jacket
5 (5 : 6 : 6) Buttons for each Jacket