I prefer mine, but if you would like to buy the actual, proper, original pattern you can find it on this link.
If you would like to see how ridiculously simple it really is, read on!
Knitted woven mug warmerUse heavy weight yarn that is easily washable. Sounds obvious but I still find it's worth saying, "easily washable", on the off-chance that you knit this up out of white angora and then spill mulled wine down the side of your mug and cry. It may be a quick, easy pattern but it's still not worth the frustration of stains.
Use straight needles in US size 3.
Cast on 15 stitches.
Row 1: k5, p5, k5
Row 2: p5, k5, p5
Rows 3-6: repeat rows 1 and 2 twice
Row 7: p5, k5, p5
Row 8: k5, p5, k5
Rows 9-12: repeats rows 7 and 8 twice
What you have knitted now forms 6 squares in two rows of 3. (I hope that makes sense to you!) Repeat what you have done 4 more times, until you have 10 rows of 3 squares each. It will be approximately 22 cm (or 9 inches) long by 8 cm (3 to 3 1/4 inches) wide.
(Let me try to explain this next as clearly as I can, for any knitting novices that might be reading, so I will go tiny step by tiny step now.)
You have 15 stitches on the needle. Numbering them from right to left, as you work them, I start with stitch number 1.
1 - k
2 - knit. Pull first stitch over the 2nd stitch and drop it off the needle to bind it, or cast it, off.
3 - k. Cast off again.
4 - k. Cast off again.
5 and 6 - k as normal
(You have now 3 stitches on your right needle.)
7 - k
8 - k, and cast off
9 - k, and cast off
10 - k, and cast off again
11 and 12 - k
13 - k
14 - k, and cast off
15 - k, and cast off. Leaving a tail, break the yarn and thread it through this last stitch to cast it off.
You should now have 6 stitches remaining on your needle, in 2 groups of 3 with a gap between. Use a stitch holder to keep the 3 stitches on the right safe for you, while you work the left into an I-cord.
Transfer stitches to double pointed needles. Keep the work facing the same way throughout the I-cord knitting: do not flip front and back as you normally would work between knit and pearl sides.
Reattach yarn and K3
You are now holding your work on the needle in your right hand. Keeping it facing the same way towards you, slide the work from the left end of the needle to the right end of the needle, and K3 again. Keep doing this until you have about 10-12 rows of I-cord, or 6 cm (2 1/2 inches) length. Cast off as you usually would, knitting 2 and dropping the first stitch over the second and off the needle. Pull yarn tail through the final stitch.
Repeat the above with the final 3 stitches you had placed on the stitch holder, knitting I-cord, casting off and securing.
Now, all you need to do it weave in the yarn tails in your work, using the I-cord tails to secure the cords to each other forming a loop. Sew on a button.