Hey peepol! I think it's great with all the advice about disposal of used gear, and something that people should keep in mind when using dope on the go. But I think it would be great to twist this thread a little bit, and talk about how people have their non-used gear with them on-the-go. Like home-made carrying kits, that are essentially a shrine to the user when unfolded... Things of the likes...
E.g. when I used to snort my heroin, I had stitched a small leather pouch that was about 5 x 5 cm. It had a flap for sealing, and a neat closing mechanism made with a leather string loop attached to the pouch, which I would pass through a small hole in the flap, and then wrapped around the pouch to secure it shit (EDIT: shut). On the inside of the flap, I had a tiny pocket that could hold a small packet of dope, but otherwise, the pouch was perfect to hold an Eppendorf vile for the smack (which could hold about 1.5 g or so of crushed powder), a wooden pipe for snorting (actually a 4.5 cm long joint mouthpiece, nicely carved and a perfect fit in my nostril), and a razor blade for chopping (one of those single sided trapezoid shaped ones, used for craft knifes). This kit was really convenient to carry around; the leather prevented me from accidently cutting myself on the razor, the razor spared my credit cards from chopping too much rock, and the pipe let me avoid stuffing too many dirty money bills up my nose... It felt like a blessing every time I would pull out the kit - which could fit in any pocket, sock, bag, etc. - unfold it and break out a line...
For shooting dope, I haven't gone as far as to make a carrying kit, as the prospects of me shooting dope on a regular basis have been dim, as I can't afford to do so with my lifestyle (health, work, money, etc.). But anyways, when on the go, I have a couple of sealed 2 ml syringes, a similar amount of 27G needles and SteriCup/Filt kits, as well as some 1.5 ml disposable vials of sterile saline solution. To dissolve the dope, which too often is no. 3, I carry a packet of crystalline citric acid. Of course I also take with me alcohol pads for sterilizing the shot site before and after mainlining. I then wrap my used gear tightly in tissue/toilet paper, and carry it with me until I can dispose of it responsibly.
Take care folks, and I hope to hear about others creative ideas for conveniently carrying around all that stuff...