Make one to include in every Christmas card you mail next Christmas?  Plus, after the holidays, you can hang several in your kitchen window, using suction cups and hooks.

Size 8 steel crochet hook
J & P Coats Knit-Cro-Sheen, Number 10 bedspread cotton --1 ball will make several
Or for a larger snowflake - approx 6" diameter use white crochet kitchen cotton

Ch 6, join with a sl st to form ring.
Rnd 1: Ch 3, dc in ring, (ch 2, 2 dc in ring) 5 times; ch 2, join with sl st to top of beg ch-3.
Rnd 2: Sl st in next dc and ch-2 sp, ch 3, dc in same sp, ch 2, 2 dc in same sp- first shell made; ch 1, (in next ch-2 sp make shell of 2 dc, ch 2, 2 dc; ch 1) 5 times; join with sl st to top of beg ch-3.
Rnd 3: Sl st in next dc and ch-2 sp, ch 3, work a first shell in same sp; (ch 5, sl st in third ch from hook-picot made;  ch 2 shell in ch-2 sp of next shell)5 times; ch 5, sl st in third ch from hook, ch 2; join as before.
Rnd 4: Sl st in next dc and ch-2 sp, ch 3, work a first shell in same sp, *(ch 5, sl st in third ch from hook) 3 times; ch 2, shell in ch-2 sp of next shell. Repeat from *4 times more, ch 2, join. Fasten off.