Originally Posted by Yarn or Fabric

I'm planning my guild's 2014 block of the month quilt and decided that it would be fun to showcase a different shortcut way of doing a block part each month...
So I know quick ways to do...
pinwheels
8 at a time half square triangles
4 at a time flying geese
inset circle
Izy's freezer paper applique
scrappy 4 patch - Missouri Star tutorial
square in a triangle/shaded 4 patch/Mary's triangle

Does anyone else have any suggestions for clever shortcuts to making parts of a block?