this is the finished rag bath mat for my new black and white bathroom, which is made from one half of a duvet cover, and 2 contrasting pillow cases. i created the 'yarn' from the duvet/cases using the rag bath mat tutorial then knit up the mat using the pattern below. you could just as easily use sheets or old tshirts for this project as well. in the end, the mat is super plush, and a great way to recycle your old linens. and, you get a fresh new look for your bathroom floor!
to make this, I only needed 1 side of a king size duvet cover and 2 pillow cases (and still had leftovers). when making them into 'yarn' i kept the pillowcases separate to easily make the fair-isle stripes, and 1 continuous ball for the main color.
to knit, i started with my main color, used 1 pillowcase for the first stripe, carried over my main color for the middle stitches, joined in my second pillowcase for the 2nd stripe, then again carried over my main color for the last set of white. since there is a fair amount of carrying over, i made sure to keep my yarn loose, and always carry over on the wrong side. the knitting on this is pretty simple -- just stockinette stitch with garter stitch borders (on all edges).
row 1(right side): k2, k4 in main color A, k3 in contrast color B, k4 in color A, k3 in color B (by joining a second skein of B), k4 in color A, k2
row 2(wrong side): knit across row, making sure to knit with contrast yarn B as you come to it, and carrying your main A yarn in the back of your work
row 3(right side): knit across row, continuing your contrast yarn vertical stripes
row 4 (wrong side): k2, p til 2 sts remain, k2
row 5 (right side): knit across row, continuing contrast yarn vertical stripes
repeat rows 4 and 5 until about 1.5 inches before desired length
row 1-2: knit across row, continuing constrast yarn vertical stripes
row 3: knit across entire row ONLY using main color A (discontinue stripes)
BO all stitches
CO = cast on
k = knit
p = purl
sts = stitches
BO = bind off