50 g (230 yards) of sock yarn in the House colors of your choice
Set of 4 US/0 (2.00 mm) DPNs
Cast on 20 stitches.
Arrange 6 stitches on the first needle, 8 on the second needle, and 6 on the third needle.
Join with out twisting and work K1,P1 ribbing for 6 rounds.
Work in stockinette stitch for 2 rounds.
Work the House chart of your choice using the Fair Isle technique.
Knit two more rounds in stockinette stitch.
Divide the stitches in half for the heel and arrange them on the needles so that the 10 stitches for the heel occupy a single needle.
Work back and forth on those 10 stitches in stockinette stitch for 8 rows.
End with a wrong side row.
This is a Dutch Heel.
Row 1 (right side): K6, K2tog, turn.
Row 2: P3, P2tog, turn.
Row 3: K3, K2tog, turn.
Continue to work three stitches and then decrease and turn the work until all of the heel stitches have been incorporated.
There should be four stitches left.
Knit those four stitches.
Arrange stitches so that the instep stitches are on a single needle and the remaining heel stitches are divided onto two needles.
The round now begins and ends in the center of the heel and the needles are 1, 2 (instep) and 3.
With needle 1, pick up and knit 9 stitches evenly along the side of the heel flap.
Knit across the instep stitches on needle 2.
Pick up and knit 9 stitches along the other side of the heel flap and then knit the stitches on needle three.
To decrease the Gusset
Needle 1: Knit to the last three stitches on the needle, K2tog, K1.
Needle 2: Knit evenly.
Needle 3: K1, SSK, K to the end of the round.
Knit all stitches.
Continue to work these two rows until 20 total stitches remain on the needles.
Work evenly until foot measures about 1½" (3.81 cm) from the back of the heel, which is about 6 more rounds.
Needle 1: Knit to last 2 stitches, K2tog.
Needle 2: SSK, Knit to last 2 stitches, K2tog.
Needle 3: SSK, Knit to end of round.
Knit all stitches evenly.
Repeat these two rounds until 4 total stitches remain.
Cut the yarn and run the yarn tail through the remaining stitches.
Pull tight and run the yarn tail to the inside of the sock to secure it.
Weave in loose ends.
Sew a keychain on to your sock.
Optional Striped Sock Pattern
You can also knit the socks with stripes. To make these stripes all you have to do is, k1 in colour A k1 in colour B, knit on round repeat. A,B,A,B. On the next round, you knit B over A and A over B, then repeat B,A,B,A.
On that note, Harry crafting to all!