I used to live in Park Slope... way back in the day (well, actually 2001)... and to this day it's still one of my favorite places. Anyway you should definitely check out the Brooklyn Designers Market if you're in the area July 22 from 10-6. I would write more but this is only a 10min study break. Enjoy!
(Sorry my gorgeous picture is down, flickr should be up and running shortly!)