Here are 4 stitch patterns that I swatched up after reading CRAL Book #2, Crochet and Creative Design. They appealed to me because I don't recall ever seeing these variations on long single crochet in a stitch dictionary. The top left swatch is split hdc puffs worked into the spaces between stitches. The lower left one biases but it could probably be prevented, even though you have to cut the yarn at the end of every row so that all rows face the same side.
The yarn is Patons Grace mercerized sportweight cotton. Split hdc puffs would look very different in a wool.