Easy, In the round Baby Beanie

8ply yarn
G/4mm hook

Rnd 1: With Magic loop, work 6 HDC, join (6)
Rnd 2:  Chain 2, HDC in same stitch, 2 HDC in each stitch, join (12)
Rnd 3: Chain 2, HDC is same stitch, * HDC in next stitch, HDC in next*  repeat from *, join
Rnd 4: Chain 2, HDC is same stitch, * HDC in next 2 stitches ,HDC in next*  repeat from *, join
Rnd 5: Chain 2, HDC is same stitch, * HDC in next 3 stitches, HDC in next*  repeat from *, join
Rnd 6: Chain 2, HDC is same stitch, * HDC in next 4 stitches, HDC in next*  repeat from *, join
Rnd 7 -17: Chain 2, HDC in each stitch around, join.

Finish off and weave in ends.

This hat can be used a base pattern for other hats.