ELLE.com is running a 21-Day Eco-Chic Challenge. It's not a contest...so don't get all crazy here...it's just a compilation of tips (21 in all) that will get you living a more green lifestyle.
Or at least get you started.
One tip I love...and actually do on a daily...is to tote around a reusable water bottle.
You can even go a little chicer (is that even a word?) by buying a bottle like this one from Sigg.
It is $22...so that might leave you thinking it's a little splurgy...but if you figure in the money you'll save by not having to purchase bottled water everyday, it's worth it.