Well I'm glad you sound like you're in a better spot, and approaching this with the true spirit of a wise(r) drug adventurer and not the fatalistic ennui of Charlie Sheen shooting powder coke into his leg muscles (which he claims to have done--says it does have an effect, mainly on the ability to walk). And, the Australians let me stay sometimes, I think, if I put that "AND OF COURSE YOU COULD DIE" disclaimer in periodically. I always thought all my "advice", as originating in the US, automatically got screened and redacted by a team of liability lawyers and insurers, anyway. My personal goal in reducing harm has always been to say, "Yes, you will probably die, just not that particular way--that's not how acid works."
And the misplaced faith in my martini knowledge (an honest gin drinker would never look me in the eye) reminded me why I like gin, besides it being a clear liquor that can hide in other beverage containers easily: it goes with tonic, and the sugar-free version is what my liver and malaria craves.
Putting tonic in a martini makes it just a more-bitter gin and tonic, but I realized, I bet your crack is soluble in THAT. Or at least, more so. That quinine is really another plant alkaloid, but with a polar residue to help keep it in solution (independent of pH). It might be a better "detergent" than ethanol, for crack. Probably no where near a solid gram's worth, but it's a start.
And THEN I thought of my actual, non-gin favorite martini for those fleeting times I'm in the city with money earmarked for non-bail or drug items: vodka with Pastis. Like the other anise liqueurs out there, it will crash out suddenly if you add more than a fraction of an eyedropper at once. It tells the bartender no tip on this one, go back to school. This is unhelpful for us except to show that really, the "mixed-drink" world might be a good place to start when looking for "solutions". And even closer to home, consider the plastic-handle store brand or possibly Popov Vodka you can find always within 500 yards here. I think of it more as less-refined E85 gas; it would kill you long before the crack did, but would for sure, strip the nuggets off a MacArthur sidewalk.
OK, I really know you wanted to hear my social justice thoughts on the plight of my old city, but I have to say instead: there is an "extra" ingredient to crack that comes with either heat or oxidation, so only with smoking. Forgot the name, but it would not occur if taken orally. So then, why not a martini-crack water pipe? Produce, collect and savor that extra kick. I'm not kidding! THere's more here than I thought.