|56" x 43" Afghan|
Both pieces use the same basic pattern, a puffed shell stitch, which can be found here on Lion Brand Yarn's website under the name "popcorn stitch." The scarf uses 36 ch sts in the base chain, making it about 10" wide (which is a little too wide in my opinion). I don't know how many the afghan uses because it is currently at the Maryland State Fair (it got first place in Shell Stitch Afghan, Adult Crochet).
The purple scarf doesn't use scrap yarn, of course, but it does follow the same pattern. I think this has 21 base chain sts.