Jacob's Ladder
Dresden Plate
Snowball Nine-Patch
Amish Diamond
Buckeye Beauty (super simple, but makes a lovely quilt)
Hole In The Barn Door (great for framing a focal fabric)
Octagon and Twist (has a couple of inset seams, but it's actually pretty easy to do)
And my latest favorite: Simply Woven. It looks so complicated, but is actually super-easy. It's all straight cuts and seams. No curves or triangles. Link:
http://www.modabakeshop.com/2012/10/...ven-quilt.html