Hi, everyone. Not sure if this community is still active, but for what it's worth, I'd like to share a few photos of the Hogwarts scarf I just finished.
My girlfriend requested Slytherin colors in the original pattern. I'm a novice crocheter (and can't knit at all, damn my left-handedness), so I went with an easy-to-use yarn: Lion Brand Wool-Ease worsted, two skeins each of Forest Green Heather and Grey Heather. After several google searches failed to come up with a satisfactory pattern, I struck out on my own, and settled on doing double crochet with an I hook for a fairly open, flexible scarf.
My pattern was as follows:
In green, with an I hook, ch 28. In the 4th ch from the hook, dc. Dc in each ch across for a total of 25 dc. *Ch 3 for turning chain, turn, dc 25.* Repeat between * four more times for a total of six rows of green. (This gave me an 8" x 3.5" stripe.) Change to gray, *ch 3, turn, dc 25.* Repeat between * five more times for a total of six rows of gray; change to green and repeat.
To get the length my girlfriend wanted, I ended up with a total of 23 stripes, starting and ending with green. (If I do another Hogwarts-style scarf, I think I'll try 8 rows of dc in each stripe for a broader, more authentic look.) The scarf turned out to be a healthy 90" long, not including tassels, and I still had plenty of yarn left over (I used perhaps 300 yards of each color). Took a total of twelve hours over three days.