The link below will take you to a page with guides for an 8" and a 6" version of the snails trail block. You could take any pattern and reduce it, making each square in a 16 square block 1.5x1.5 (cut them 2"x2"). That should give you a 6" finished square.

This might be a good block for paper piecing, especially in the 6" size - those pieces in the center are going to get really tiny!

Kate

Here is a link that might be useful: snails trail 8

Thanks. I did find one that is pp.