Hey, I know about that 6-year-old girl! I found her when looking up the youngest suicide ever. I've also seen vacuum cleaner cord & nylon belt & exercise resistance band, so literally anything rope-like can work. Other notable suicides I've found involve a 15-year-old Russian boy who cut his head off with a chain saw -- absolutely stunning! Or death by ball point pen -- one guy shoved a pen into his chest and that failed, so he shoved in pen #2 which hit his heart causing him to bleed to death. Another guy shoved a pen into his eye socket and fatally hit his brain (not instant death, but he got dead eventually). Suicide by broken wine bottle also stands out, showing us that death is available even if you don't own a knife. And some years ago at a local gun range we had a guy who killed himself with a wussy rented .22 pistol (was .44 Mag ammo just too pricey?) And then there is Amy Winehouse who died from drinking vodka, and she wasn't even trying! No other drugs involved either. Or there was a 12-year old girl who ordered an Uber which took her to a parking garage where she jumped to her death before sunrise, before mom & dad woke up to find her missing.
It's quite stunning all the ways people have managed to die. They can be really young, and their equipment can be weak as hell, or most bizarre, or even literally free and still they get the job done. And I get to feel like a total failure for still being alive because I can't do with a 1st grader could. Seems determination matters more than materials, unless you're Winehouse in which case you can die effortlessly.