Hey I actually wound up going to a place called pipesandstuff.com, its right by belmont and clark as well, actually your right there if you take clark to belmont, theres also a place around the corner called noveltysandstuff.com, both have the same stuff, and they are really well priced, I bought a plastic bong for 30, a long one hitter for 7, and pipe screens at 10 for a dollar. I liked the place, and depending whose there, they are pretty cool about slang if there are younger people working, and well most of the people work in that district are high anyways...
but yeah at any head shop in chicago, I would suggest to use words like water pipe.

Oh yeah noveltiesandstuff.com sells salvia.