I've donated a relatively small amount, and will donate more when my finances allow (that's not open-ended; I'm expecting a small windfall in a few months). It should go without saying, but if you have a good employer, check to see if they match charitable donations! Mine turned my donation from a pitifully small one into a just plain small one.

Wouldn't it be weird if it turns out that there's an excellent and durable method of preserving brains, but it's not the one that's been used for the last half-century or so? Horrifying, obviously, but profoundly weird as well. The two positions I've seen on the topic have been "it never has and never will work", and "it's worked since some possibly-specified time in the past". A world in which people who sign up for preservation avoid death if and only if they're lucky enough to have signed up after, say, 2030, feels weirder than a world where the rational are rewarded, the irrational punished. The zog, I suppose.