A number of people are participating in Knit Purl Hunter's The Hole Story mystery KAL, which uses two skeins of Rylie, a beautiful alpaca, silk, and linen blend. It's a semi-circular shawl that begins with a garter tab. One of the notable aspects about Michelle Hunter's KALs is the amount of educational content she builds into them, along with support on her KAL blog and a dedicated Ravelry forum. She has a number of nicely produced technique videos that go along with each project.
Although I knit it well after its time as a mystery project, one of my shop samples is Ridgely, which combined lace knitting with intarsia and stripes. Not only was it an interesting knit, it gave me a chance to play with CoBaSi, a wool-free sock yarn which blends cotton, bamboo, and silk with a bit of elastic.
Knit Purl (Michelle) Hunter works closely with Skacel Knitting, and as a result, there's a pretty good contest opportunity here. First prize is a set of Addi Click interchangeable needles!