Square

Paper:
Lid: 49.75 cm square of Elephant Hide (26-division square grid)
Box: 31 cm square of Elephant Hide
Bracelet: 70 cm by 11 cm strip of Elephant Hide (64-division by 10-division square grid)

Model:
Lid: side length of 11.9 cm, height of 4.3 cm
Box: side length of 11.7 cm, height of 4.9 cm
Bracelet: width of 2.3 cm, diameter of 8.5 cm (circumference of 26.5 cm)

Paper: 16 × 15cm square of kami
Model: diameter of 16cm

This is the front and reverse of the model. For the front, I chose variation 3 (right), for the back variation 2 (left).

Paper:
Chick in Eggshell: 15 cm square of kami
Chicken: 2 × 15 cm square of kami