In my ongoing study of Being an Artist-Hipster (I bought an iPod recently, and proudly sport sennheiser headphones on my head or around my neck most of the day), I've taken to smoking a variety of r.o.y. tobaccos. I like Amsterdam Shag, and recently got some Danish Export (as far as I can tell, the ~only bulk brand shops in town stock get is Peter Stokkebye. The headshop has a pair of fruity, gross-tasting house blends.). At $2.25 an ounce, which lasts a week or so with sharing & wasteful rolling, I consider it one of my safer & cheaper hobbies.
(a fellow student commented the other day, when I offered a respirator as he hand-sanded bisqueware, that he smokes enough that the silica will just settle on the layer of crap that he later coughs up.)