Pinterest.com. A few weeks ago, I overheard a few of my co-workers talking about a web-site where they've been collecting idea for a few craft projects for around the house -- one is a mother with small child, the other is an expectant mother. They talk at lunch about collecting inspiration material and sharing ideas piqued my interest. On the web-site, you bookmark images or web-pages that give you source of inspiration; you pin those images to a virtual pinboard to organize and share ideas. You have to be invited to the web-site (it's still in beta), it took me about a week to get an invite via the web-site, but send me an e-mail if you want me to send you a more immediate invite.
I've book marked a few MOCs that inspire me. I have a big castle project floating around in my head, so I've been collecting works that inspire me to keep building. :)