I did a 6 1/2" ABC block swap. You signed up for a specific letter(s) and found a fabric to represent that letter (for instance apples for A, ballons or butterflies for B, ect. You cut 26 6 1/2" squares of your fabric (1 yard does it) and submit them to the swap hostess. The hostess sorted everyone's squares and made sets of 26 squares A-Z. You received back a set for every letter you had. One time it was so large there were 4 groups and I took a letter in each for 4 different sets. Then everyone shared the quilts they made from the sets. These are fun for kids.