I don't like coke, but I do like ketamine so I can describe my "snorting setup." The ketamine I buy usually comes in needles and not sugar, so I have a little ceramic mortar I use to turn it into thin powder so it's easier to snort and does less damage to your nose (not sure whether this can be done with coke or not). Once I've turned it into thin powder, I pour it into a small 1.5 ml vial that I bring with me. I also have a snuff, highly suggested. When I want to hit I simply rotate the vial upside-down, and then I gently open it in a way that leaves some ketamine on the cap. Luckily my snuff fits perfectly the cap so I can simply snort what's in there with it. Possibly multiple times based on how much k I want to do.
I highly suggest to use vials instead of plastic bags. They do not break and it's easier to dose your hits. If I want to do a line instead of snorting from the cap, I simply open the vial and "tap-tap" out the k I want to do, or even better I use the cap to dose how much ketamine I want to do. And I snort it with the snuff (highly suggested too, definitely gentler on your nostrils than paper or straws). Anyway, if you pour too much, it's definitely harder to put it back in the vial, so I usually carry my vials in a small plastic bag lol just in case I need to pour some powder back in.
Also I have a square metal box the size of a large coin where I sometimes keep the powder, and a very tiny spoon that perfectly fits into a nostril that I use to grab some powder and snort it. They're handy and cool but I don't always bring them with me. By far my favorite way to consume ketamine is vial + snuff + line on the phone