Im going to hell, and I accept it, so one of my tricks when discovering other peoples accessable pain meds was not to take a few, but to literally search for another pill that looks just like the ones of my desire, and switch them with all of the pain pills. If a suitable mimic cannot be found on site, I would make and excuse to go out to the store really quick ("beer run" lol), and look for an OTC med that had pills that looked as similar to the pain pills as possible. ANd trust me, I have found ones that are almost exactly the same, except for numbers. Once I even altered a prescription label, and cleanly cut off the part that described the number/markers on the pain pill, but left the rest of the label intact. There was no way to tell I had removed it, and some (rare) pharmacies have labels that dont feature that pill describing part.
Of course, I did have morals. I didnt do this to people who truly needed these pain pills. Someone with cancer, or something nearly equally as shitty... I would never touch their stuff. I would always make sure that the ones i took has been expired for quite for time, or without a doubt they were no longer used nor needed. Yes, I'll jack your pills, but as someone who has been in withdrawal many times, I would never inflict it upon an innocent person who did nothing to deserve such torture, especially when they kindly let my use their bathroom.
The only problem with switching narcotic pain pills with fake look-a-likes, is that you eventually come back to the place, forget you did it, and either waste a buncha time scheming how to take them again, or actually DO swipe em and eat a bunch, only later realizing that you switched em out long ago. Talk about a letdown.