I am playing around with some of my Rib-It block patterns using Plymouth Galway Chunky yarn and size 10 needles. Using the patterns as written for 8" squares and worsted weight yarn, these are coming out to a nice, cushy 10" square block, just because of the change in yarn thickness and needle size.
Here's the first one, from Rib-It! A Sampler Throw, Part 3, the Hunter's Rib.
Love the blue! This is very nice knittin' yarn, btw.