This particular coathanger happens to have a nice shiny black coating on it, and I didn't want to scratch, damage or remove that coating.
So I bent this one 100% by hand, with no pliers or anything, just my hands, fingers and muscles. And yes, it was extremely challenging, I'm surprised I didn't get any blisters and only broke one thumbnail in the process.
Note that I managed to get this one to stand up and balance on its own without a stand. I did that by ever so slightly curving the final result, the center is about 5mm closer to the viewer than the ends.