I used to use cinderblocks a lot as part of my furniture. They would be the base of a shelf, or underneath a fan to get better air circulation. I had a few stacked up on my desk to make it more stable, and so I had cool cubbyholes for sticking my bank statements and CD jewel cases and so forth.
But since I've moved, I have 'real' furniture and generally don't want to cart a bunch (12 full size and 4 flat) of cinderblocks up a flight of stairs just so I can have them heaped around. I've found they make fairly crummy lawn chairs, and imagine my sister won't want them sitting on her lawn forever.
So, any ideas on what I could do with these babies?
<img src="http://gladstone.uoregon.edu/~gvidas/photos/stonehenge-esque.jpg">