I hope more people post pics here, I've really enjoyed seeing everyone's altars so far!
I have two altars, a working altar and a shrine-type altar. The working altar is the fireplace in the living room that my roommate and I share; the left side of the hearth is his area, the right side of the hearth is mine, and we share the mantle as a general storage area. I do daily offerings, spells, rune readings, and that sort of thing there. I also go there when I'm really upset or having a panic attack; just lighting the candles and laying down in the circle area with a grounding stone and a rose quartz helps a lot in those cases.
Both my roommate and I have made some minor changes (mostly rearranging) to our respective sides of the altar since this was taken, but basically the area looks like this:
http://img.photobucket.com/albums/v618/ginnflynn/pics042.jpgHere it is when we have a fire, just for fun:
http://img.photobucket.com/albums/v618/ginnflynn/me021.jpgAnd this is the small shrine-type deal I have in my bedroom. I usually keep a few random crystals and the double-termination amethyst I sleep with on there, too.
http://img.photobucket.com/albums/v618/ginnflynn/pics018.jpg