I made these socks out of old T-shirts. I decided to do a lil’ mini tutorial since some people were wondering how exactly I do that 
Here is the finished sock.
Back of the socks
Front of the socks
TUTORIAL (somewhat…I hope it’s understandable)
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You need shirts that have some stretch to them(At least one way stretch) and a sock that fits you comfortably(to make the pattern) You will also need some paper, a pen, scissors, pins, something to sew with.
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Take your sock and fold it flat so that the heel is on the back( Look at the picture below.) put it on a piece of paper and trace around it. Make note where the heel part ends.
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Then flip your sock around and put the heel against the line where the heel previously was and trace around the sock again. This time do not trace around the toes. This part will determine how tall your socks will be. Cut around the marked lines with a seam allowance added.This is recommended if you use a serger. (This will make the back pattern piece)
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Now flip your sock over so that the heel part is not showing. Take another piece of paper and trace around the sock. This is optional but I make small markings where the heel folds are. Cut around the lines with a seam allowance added. (This will make the front pattern piece)
You can also do it like this. Take the pattern piece you already made and fold it like shown below.
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Cutting the pieces. Take your old shirts and find the ones that are little sturdier to make the back pieces. This part will get a lot of wear. Put your pattern pieces with the straight edge against the bottom hem of the shirt. I like to use the existing hem. Pin and cut through both layers of the shirt at the same time. One pair of socks will need two front pieces and two back pieces.
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Now take the back piece and fold it right sides together like shown below. Sew along the lines shown on the picture. This will be the heel.
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Take the back piece and fold it like shown on the picture with the heel on the back
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Place the front piece on top of the back piece right sides together. Sew all sides closed. Start where the hem is and sew downwards on both sides. Then sew the toe part. Always sew towards the toe. that way everything is even in the end.
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Hide and cut the thread ends and turn your sock inside out.
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You are done! Enjoy your comfy socks.
I saw the sock making pattern in an old soviet magazine Журнал мод years ago. My mom kept all magazines that had some kind of pattern in them, because shops often didn’t have basic things and DIY was often the only option.