I used:
3 yards KU Jayhawks fabric = 28 squares
3 yards blue flannel = 28 squares
3 yards red flannel = 28 squares
3 yards denim 60" wide = 30 squares
4-5 yards white muslin = 72 squares
The squares are 8 1/2 inches
Time= 2 days for cutting and sewing, 1 evening of snipping edges (which I have not done yet)
How to treasure all those t-shirts you don't know what to do with but can't throw them away.