Slipper-socks with knitting needles. Author - Olga Vasyukhina.

Slippers knitted with needles.
Tutorial by Olga Vasyukhina.
The knitting will be done "from the heel to the toe". Cast on 12 stitches from two balls onto two separate needles. We knit the sides (edges) of the slipper. Knit the sides separately or simultaneously, as you prefer.
The main pattern is "ribs".
1st row - knit stitches
2nd row - purl stitches
3rd row - purl stitches
4th row - knit stitches
Continue this pattern from the 1st to the 4th row for several (36) rows.
37th row - knit the stitches from the first ball, cast on 3 chain stitches and immediately knit the second piece with the second needle (cut the yarn from this ball). (23 sts)
Next, we knit the toe.
58th row - k2tog, 2 purl, 21 purl, 2 purl, k2tog
We will make decreases at the beginning and end of the row according to the pattern (where there are purls, knit purls, and where there are knits, knit knits) in rows - 62p, 66p, 68k, 70p, 72k, 74p.
75th row - 13 knits
Now, cast on stitches along the bottom with another color (total 89 sts).
Knit 3 rows of knits. Cut the yarn.
Sole
Slip 41 stitches. With the main yarn, knit 7 stitches, turn.
7 stitches and one from the side, turn
8 stitches and one from the side, turn
And so on until there are 17 stitches in the middle.
Then knit like the heel of a sock.
At the end, when there are 10 stitches left on each side, decrease in the middle at the beginning and end of the row. Do the same in the next row. (it became 13 sts)
Next, knit like the heel.
There are 5 stitches left on each side. We knit like this - at the end, 1 stitch from the side and 2 stitches from the middle together. And so we decrease until only 1 stitch remains. We will use it to
sew the height of the back.
With another color, cast on stitches along the top of the slipper (44 sts) and knit 3 rounds of purls. Then finish with a "crab stitch" crochet edging.
Lace.
Crochet a chain of 100 ch, or take a ready-made lace, ribbon, and thread it through our slipper. The slippers are ready. Wear them in good health!
Attention! The stitch count may be different for you. It all depends on the thickness of the yarn.