Slippers in two hours.

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Socks in 2 hours (knitting with needles)
1st option, the simplest.
We knit with 2 needles.
Yarn - 250 m in 100 g, half a skein is enough for 1 pair.
Needles №3.5.
Size 36-37 (In parentheses 37-38)

Cast on 52 stitches (58). Knit 4 rows (knit and purl) in 1x1 ribbing. Let's start increasing at the toe. Now we knit in stockinette stitch.
Knit 15 stitches knit, 1 yarn over (you can use a twisted knit - then there won't be any holes), 2 knit, 1 yarn over, and again 25 knit. Purl row - according to the pattern. Yarn overs are knitted purlwise. Increases will be done in 6 knit rows.
26 knit, 1 yarn over, 2 knit, 1 yarn over, 25 knit, and the last stitch purl.
Next rows: 27-1-2-1-27, 28-1-2-1-28, 29-1-2-1-29, 30-1-2-1-30.
Now we will knit the sole. There will be no seams!
Knit 25 knit, another 13 knit (this is the width of the sole) and two stitches together knit.
Turn the work. Slip the first stitch, 12 purl, 2 together purl.
Turn the work. 26 knit, 13 knit, 2 together knit. Turn the work.
Slip the first stitch, 12 purl. 2 together purl. Decrease stitches as usual for knitting the heel of the sock. Decrease in this way until all stitches are finished and only 14 stitches of the foot remain. Now cast on the remaining stitches to the height of the sock and finish the work just like knitting the heel. Don't forget that we started the work with 1x1 ribbing. When we have 3 stitches left on the right needle - knit again 1x1 ribbing. In the purl row, do not knit the last row, but close the stitches - our working yarn meets the ending yarn. Tie and weave in the ends on the inside. Done!
We learned to knit a simpler option, now we will make decreases on the foot so that the sock fits into any shoe when only nylon is worn on the feet.
There are 13 (17) stitches left on the right needle - decrease 4 stitches on the foot: 2 together, 1 knit, 2 together, 1 knit, 2 together, 1 knit, 2 together, 1 knit. And after a couple of knit rows, decrease 2 stitches on the sides of the foot.
Variations on the theme: the foot can be knitted not only in knit stitches, but also in stockinette stitch. Or in 1x1 ribbing. Decreases can be "hidden" in the ribbing. You can create holes for the laces after the ribbing. You can make a border of knit stitches along the purl side; this detail is present in the sample. It results in a "border" on the front. All details can be seen in the photo. Shall we knit?