Worsted weight yarn in any two colors
Hook size: US H (5.oo)
Yarn needle

Abbreviations:
CH - chain
ST - stitch
HDC - half double crochet
YO - yarn over
BLO - ST in back loops only.

Skills needed: CH, HDC (YO, insert hook in ST, pull up a loop, YO, pull through three loops on hook), Whip stitch.

Gauge not necessary. Pattern can be adjusted to fit your head.