I thought of a Yellow Brick Road pattern.
Fat Quarters required:
Baby size (48" x 57") = 6 fat quarters + 1 3/8 yds. border & binding + 3 yds. backing
Lap size (57" x 75") = 12 fat quarters + 2 yds. border & binding + 3 1/2 yds. backing
Twin size (66" x 93") = 18 fat quarters + 2 3/8 yds. border & binding + 5 1/2 yds. backing
Full size (84" x 93") = 24 fat quarters + 2 5/8 yds. border & binding + 7 1/2 yds. backing
Queen size (93" x 102" = 30 fat quarters + 2 7/8 yds. border & binding + 8 1/2 yds. backing
King size (120" x 120")+= 48 fat quarters + 3 1/2 yds. border & binding + 10 5/8 yds. backing