You may already know about this one, but
>http://www.digsmagazine.com is really good.
Hmm...what else do I know of...
I'll be back with some links in a few. :)
*Ed. to add: http://www.pbteen.com is Pottery Barn's new catalog for teens. I'm not a teen (and I don't know how old you are either), but I requested a catalog and there are some neat things in it. The products are expensive, being from Pottery Barn, if that's an issue. But you could get ideas, or if you do order you'll know it'll be high quality.
(They don't sell these items online, you have to get a catalog.)
>http://megan.scatterbrain.org/notmartha/togoto/index.html#guides Megan has good crafty guides on her site, but mostly they are for food and wearables, so I linked you to her links page. There should be some ideas in here.