what are the most ethical places to give your stuff to in a will

I've been a volunteer treasurer for several medium sized non-profits.

You should have a think about what sort of charity resonates with you. Like education support, homelessness, legal support, drug rehabilitation, et cetera.

Then call a few in your area and tell them you're considering a bequest, and would like to understand some more about their organisation and how the money is used. 1