I have been working on snowflake ornaments with a 1.9 crochet hook.  Let me tell you that is smalllll!  It is testing my eyesight, and nerves.  Some of the patterns call for even smaller but this is the smallest I can work with.  I thought I would share some of the patterns in case any of you wanted to make some of these ornaments.  I think they are beautiful.  Here are a couple of mine.

Here are some free patterns if you want to make some:

Grandma Jennie's Snowflake Ornament  found on Petals to Picots

Starry Snowflake Christmas Ornament  found on Best Free Crochet

Northern Snowflake found on Jackie's crochet & knitting

Have fun!