I undertook a practise knit in preparation for possibly knitting a "shawl collar cropped jacket".
The repeating stitch pattern is just delightful and would work perfectly in a scarf (as an example): here it is:
For a scarf
Cast on 23, 29, 33 or 41 stitches, depending on your yarn thickness and needle size - a chunky yarn and largish needles works well for this.
Work 6 rows of garter stitch
1st row (right side) - purl
2nd row * (K1, P1, K1) all into the same st (ensuring your yarn is brought forward for the purl component), P3tog* rep from * to end.
3rd row - purl
4th row *P3tog, (K1, P1, K1) all into the same st, rep from * to end.