Years ago one of my hat pattern was published in the (unfortunately discontinued) Love of Knitting magazine and I finally found some time to give the pattern a brush-up: Pearls Hat
The hat is knitted from the brim to the top always with one colour at the time. On a background in whichever colour you like (I, personally, love this pattern with a variegated background), ‘strings of yarn pearls’ are worked in a contrast colour. The knitter can choose to vary the number of strings or their colours, e.g. use a different colour for each string and also the placement of the ‘strings’. In the pattern they are worked at regular intervals with 6 rounds of Stockinette stitch between them, but the distance between the strings can be changed easily.
The pattern includes four sizes to fit head circumference from approximately 45.25 to 53 cm (17.75-20.75”). It is now available from my Ravelry store, here: Pearls Hat.