Readymade - a diyselfer's companion, with on-line and monthly installments of eco-friendly projects and reuses for common items.
Make Magazine - another great diyselfer's publication chock full of ideas and projects.
instructables - a collection of user-posted instruction sets on everything from making brownies to building solar ovens.
Mother Earth News - $10/yr subscription with great articles and DIY projects.
Lifehacker - instead of hacking a computer, this collection of guides helps you hack how you live.
Freecycle - Find free items in your area to recycle for projects. One person's garbage is another's treasure!