Crocheting culicues are one of the most simple and fun things I've made in a while...oh and they are addicting too!
For this I'm using an H hook and some worsted weight yarn I had laying around (here's a hat pattern for you I made a while back with this yarn)
To begin, make a chain as long as you would like your curlicue to be plus 3 chains (the one shown here is 20+3),
Then make one dc in the 4th chain from the hook,
In the same chain, make another dc...
Now make 3 dc in each chain until you get to the end (here is how it looks about halfway through),
See the curlicue starting to emerge? Now keep going until you reach the end!