Yarn: Really, use anything you like. For my red version I used a light worsted weight merino and silk and size 8 needles. About 400yds. For this version I am using Baby Zarina DK and size 8 needles. 180yds per ball and I think I will use 2.5 balls. This is a much lighter weight yarn and therefore a much looser gauge for a summer weight scarf. Make a test swatch to judge for yourself.
Note: a ridge in garter stitch equals two rows, just an easy way to count.
Cast on 2 sts.
Row 1: Slip 1, yo, knit to end
Row 2: Repeat row 1.
Continue in this manner until 35 stitches are made.
Knit in garter (knit every row) for three more ridges to start eyelet row.
Knit 16, k2tog, yo, knit to end of row.
Knit in garter for three more ridges.
I used a marker to show me where to k2tog, yo. After the marker(to the left) are the two stitches that will be knit together, and then do a yarn over. Knit to the end of row, and repeat this every three ridges. Look at this photo to recognize the third ridge. Three purl bumps...
When the desired length is reached (try it on for size) begin to decrease for the end.
Decrease row. Slip 1, k2tog, knit to end of row.
Continue until two stitches remain, bind off.
Make an I cord: video here
Make the I-cord long enough to tie in a bow through eyelets.
PS. For this red version I did a gather at the end of the scarf. I did Not include it in this pattern, as it is pretty much unnecessary.