What's one restorative justice tool or approach (interpret this as loosely as you'd like) that you think many people would benefit (again, interpret this as loosely as you'd like) from knowing about?
oh what a pleasure of a question! thank you!
something that has helped me immensely, and that I'd guess would help other people, is learning to understand that people who do cruel, horrific, and even unforgivable things inhabit complex social and emotional realities that you can often (though not always) learn about simply by asking them about their experiences in a non-judgmental tone of voice.
some questions that are helpful to understand why something terrible has happened, asked to the person or people who caused harm:
what was that like for you?
what were you thinking during that time?
what were you feeling during that time?
what did you expect to happen?
what do you think about that now? what do you feel about it now?
the important next step is asking yourself – especially when the answers are patently untrue in consensus reality – what social/emotional/psychological reality that person has to inhabit in order for their answers to be true (at least some of the time) from their own perspective. in the rarer cases that someone is obviously and consciously lying, it is helpful to ask what social/emotional/psychological reality they are living in that necessitates the lie.
this is not itself restorative justice - that involves a lot more work. but it has helped me come to terms with the circumstances under which much extreme harm happens, including much harm that I cannot address because it, for example, has been perpetrated by my country, or harm in my own life for which I will never be able to seek restorative processes.
a bonus thing I'd say is, if you have to have a deeply horrible conversation for some reason, it's actually totally worth having a third or outside party there. I never, ever, ever would have allowed this in my previous life but if you can bring yourself to try it, it can save a lot of grief, even if that person isn't facilitating or doing anything in particular.