You have my permission to make as many hats as you need, however do not re-post the pattern. Feel free to post direct links to the source.
Yarn: worsted weight, 33 gm, 70 yards (64 m)
Hook: 5 mm (H)
Gauge: 14 dc & 9 rnds = 3×3” square
Hat circumference 12 ½”
Abbreviations:
bpdc – back post double crochet
ch – chain
dc – double crochet
fpdc – front post double crochet
rnd – round
sc – single crochet
sl st – slip stitch
sts – stitches
Pattern notes:
Starting chain does not count as st in this pattern.
First st of ea round is made into the base of starting chain.
Leaf:
ch 9
Rnd 1: Dc in 3rd ch from hook, dc in next st, hdc in 2 st, sc in 2 st, sl st, ch 2, (continue working on other side of chain) sl st in same st as last sl st, sc in next 2 st, hdc in 2 st, dc in 2 st, ch 2, sl st in same st as last dc.
Rnd 2: ch 3, sc in 4 sts, sl st in 4 sts, picot (ch 3, sl st in 1st ch), sl st in next 4 sts, sc in 4 sts, ch 3, sl st in base of last dc. (Do not fasten off.)
Hat:
ch 2
Rnd 1: 6 sc in 2nd ch from hook. join with sl st.(6 sc.)
Rnd 2: ch 2, 2 dc in ea st, join with sl st. (12 dc.)
Rnd 3: ch 2, 2 dc in ea st, join with sl st. (24 dc.)
Rnd 4: ch 2, [dc in next st, 2 dc in next st] 12 times, join with sl st. (36 sts.)
Rnd 5: ch 2, [dc in next st, fpdc, 2 dc in next] 12 times, join with sl st. (48 sts.)
Rnd 6: ch 2, [dc in next st, fpdc, dc in next st, 2 dc in next] 12 times, join with sl st. (60 sts.)
Rnd 7-14: ch 2, [dc in next st, fpdc, dc in next 3 sts] 12 times, join with sl st. (60 sts.)
Rnd 15: ch 2, [dc in next st, fpdc, dc in next st, bpdc in next 2 sts] 12 times, join with sl st. (60 sts.)
Rnd 16-17: ch 2, [bpdc in next st, fpdc, bpdc in next st, fpdc in next 2 sts] 12 times, join with sl st. (60 sts.)