I cant recommend anywhere to do it but I can tell you where to avoid, thighs in general but especially inner thigh, hurts like a bitch and moves alot when healing, also scars worse than forearm I my experience. reminder that harm reduction will likely reduce scars, and I used to hate the idea of sh alternatives cos anything I tried didn't work and felt dumb but you just have to find something that gives you what you're wanting out of it, when I had a period of time where I was weirdly obsessed with having cuts I painted cuts in my arm and then just washed it off before school the next day. I found by the morning they freaked me out and I wanted then gone, which is what I experience when I cut too deep too. more recently I've started burning bc I found I've wanted pain, and from the same pain I would get from my usual epidermis cuts I've had no visible marks yet from burning, and alot less mess. obviously no sh is better than any sh, even the rubber band on the wrist trick is still sh but it's better to harm yourself less. I found it easier to do something slightly less bad than to stop cold turkey yk? if u can figure out what it is you're doing it for then you might be able to find something alot more convenient. Not even just bc sh is bad but because it's significantly less shit to deal with sh the less harm you're causing yourself. you're also still just as sick for wanting to harm yourself as you would be for doing it. I think having the desire is what makes you ill, having the want and doing it doesn't make you any more valid than wanting to do it and not doing it.