Quil Size is approximately 36" x 36" without borders. The supply list is for a quilt using 20 envelopes. If you want to make more envelopes, you will have to bring more yardage.
Materials and Cutting Instructions:
For my quilt I used bug prints that I already had - 20 different prints. For an I-Spy quilt I also cut 20 squares of the flap fabric 2"x3" and laminated them so they could play a game by putting the pieces in each envelope, matching them. consider this when purchasing yardage.
***Note: If you don't want to make an I-Spy quilt, you can bring Christmas fabrics and make an advent calendar, brights for a kids room, or varied fabrics for your car to put on the back of a car seat for those long drives. Use your imagination - there are a lot of fun things to do and it is a good place to store stuff when you are finished.