Here's some of the finished squares:
My favourite square so far, from this pattern
The only adjustments I made was to replace the final round of sc with a round of dc to make the square up to the required 6".
|Yellow Puff Granny Square|
A shell stitch 'square'
|Shell Stitch Square|
I edged this using different height stitches in order to square it up.
And a Flower Granny Square, from this pattern.