I learned to crochet a couple of weeks ago and yes, it's addictive.
I'm working on a blanket for myself which is more stripes than ripples:
And then there's the ripple blanket which is a gift for a friend. I'm on the third (and final!) version after having made it too small, twice. The first version (aka 'the scarf') is being ripped and I'll finish the second one for myself if I've got enough yarn left after the gift one is done.