However, if the blanket you seek is simpler, here is one that's absolutely perfect. Undoubtedly, it's warm drape and high density will make it perfect for a fall bonfire.
The full article about this pattern is on originallylovely.com blog:
Rosebridge Plaid Blanket Scarf
Rosebridge Plaid Blanket Scarf
Neutral Plaid Blanket
Working one column at a time and sewing each column side by side, you can easily come up with this Neutral Plaid Blanket. This is a beginner crochet pattern that will satisfy your crochet craving. The diagram shows how the colors should be sewn together; there are 12 black rectangles, 17 tan
Tartan Plaid Washcloth Free Crochet Pattern and Video Tutorial
Crochet washcloths are a joy to make. They are small so you can comfortably make them at any time of year, even when it's too hot to crochet anything else. They use much less yarn than many projects, thus it offers a great opportunity to try new yarns and to use up scraps. They also make a
Chunky Buffalo Plaid Crochet Blanket Pattern
This luxuriously Crochet Buffalo Plaid Blanket will be your new favorite thing! The soft, chunky plaid blanket top works up quickly and the back is made of plush faux sheepskin. This blanket is perfect for snuggling under by the fire with your currently project or WIP.
Paragon Plaid Blanket
Of course, they can also be a bit more gingham and still be plaid. If you don't believe me, definitely have a look at this one.