Etsy...which I hadn't until a few months ago, you should check it out. You could literally spend hours browsing around at all the cool stuff people make. I'm, for one, a huge fan of handmade things. I just love seeing people's creativity and try to support it when I can. Also, I would much rather buy something unique (that may actually be closer to what I'm looking for because it's been tailored by an actual person, not a machine) than buy a mass produced item in the store. Not to say I don't enjoy some mass produced items. I do. I just really like the whole buy and sell handmade stuff idea.
Here's what Blissfully Domestic has to say about Etsy.
And of course, my shameless plug is that I sell my jewelry in this Etsy shop! :)