I used Yarnspirations’ Caron Cotton Cakes in the color of Calico Flowers. Or you can use any Medium weight yarn - you will probably want at least 3 colors. Including fringe, this took approximately 250 yards.

The size for this will depend on how many rounds you do, although you can of course make the squares smaller or larger using different sized yarn/hooks. My finished top measures: 20 inches across and 15 inches long (not counting fringe)
Each of my squares measures 6.5 inches, and you’ll need to make 8 squares.