Here I will show you how to crochet a Hogwarts House quilt out of granny squares. To make it, all you need to do is crochet a bunch of crocheted squares each with the different House colors and slip stitch them all together to make a quilt. I'll show you how to do this in the next few steps.

Stitches you'll need to know:

Double crochet

Slip stitch

Chain

Single crochet

Half-double crochet

Step 1: Materials

What you'll need:

4.25 mm hook

Scissors

Yarn Needle

Medium weight yarn

Gryffindor: dark red, gold

Slytherin: dark green, silver or grey

Ravenclaw: dark blue, gold or yellow

Hufflepuff: yellow, black

Step 2: Making the Sqaures

To make the squares, you're going to crochet a simple square with four rows, making each with the two House colors.

To begin, make a Magic Ring with your first color. (I'm starting with Gryffindor, so I'm using Gold first).

In the magic ring, crochet two double crochets.

*Chain 3, three double crochets in ring* three times and slip stitch to the beginning chain. Now you should have a small square.

Step 3: Row 2 of Square

Attach your second color anywhere on the square, and chain three.

Row 2:

Double crochet in next two stitches.

*In the chain-2 space of the previous row, crochet 2 double crochets, chain 2, 2 double crochets. Dc across the next three stitches.*

Repeat inside the asterisks around the square until you reach where you started. Then slip stitch to the beginning chain-3. Repeat Row 2 for two more rows, changing colors each row. Tie in ends and cut off the extra yarn, and there's one square complete! 49 to go!

Step 4: Finishing the Squares

Repeat Row 2 for two more rows, changing colors each row. Tie in the ends and cut off the extra yarn, and there's one square complete!

Continue making these squares until you have enough to make whatever size quilt you want. (Of course, you're gonna need a lot more squares than shown above). I made about 100 squares for mine.

Step 5: Middle Square: Hogwarts "H"

As an extra square for the center of the quilt, I made a plain black square with an "H" on it for Hogwarts. This is completely optional, as it is pretty tricky to crochet. Above is the picture of the graph I used to crochet the square. When finished, it should equal about four squares.

Before you start:

Each square on the graph is a single crochet.
The darker squares (which is the H, and the border) are to be crocheted with yellow or gold, and the white squares (the background) are black.

Start by chaining 35 (with yellow, as shown in the graph). Turn your work and single crochet across. This is the first row of the graph. As shown on the graph, the next three rows are all black, except for the borders. If you don't know how to switch colors in the middle of a row, check out Step 6 of my previous Instructable, Yarn Hacks.

When your square is finished, fasten off all the loose strings underneath and slip stitch to the rest of your squares in the middle of your quilt.

Step 6: Slip-Stitching the Squares Together (1)

Now that you have a large pile of completed squares, it's time to stitch them together. You can either simply sew them together, or you can slip stitch them, which I think is more sturdy.

To begin, place two squares together with the right sides together (the wrong sides facing out). Using any color of yarn (though I used black), insert your hook in both of the first stitches of the squares. Pull the yarn through the stitches and again insert your hook into the next stitches. Basically you're doing a slip stitch, but through both the stitches on each of the squares, tying them firmly together.

Step 7: Slip-Stitching the Squares Together (2)

When you get to the end of your first two squares, chain 1, add a third square to the side of one of the others, and keep sl st-ing across. Now you should have three squares slip stitched together.

Continue to slip stitch all of your squares together until you run out, but which time your quilt is hopefully a rectangle. If you need more squares, make sure you crochet an even amount of each color.

Step 8: Border of the Quilt

When you've finished slip stitching all your squares together, it's time to complete the quilt by crocheting a neat border around the edge of the quilt. You can simply single crochet or double crochet around a few times, or you can find an interesting edge to adorn your quilt. Below I have some neat border patterns I found on Pinterest:

5 Crochet Borders You Should Know

6 Crochet Borders and Edges

Crochet Waves Border

Here's what I did:

For the first row, half-double crochet around the entire border. Then, for the second row, single crochet in next stitch, single crochet in the stitch below your next stitch (which is yellow in the picture). Single crochet in next stitch, chain 2.

(Single crochet, spike stitch, single crochet, chain 2) around the border. Then fasten off your yarn.

Step 9: Completing the Quilt

By the time you've finished all the squares and border, you probably have a lot of strings hanging off the underside. Now it's time to go back and tie off all those strings and weave in the ends. What I do so that the ends don't show is tie the two strings that are closest together in a knot, then trim the ends. That way the ends don't come out.

Now your quilt is finished, Enjoy!