I guess not everybody on here loves #mastodon, but FWIW, I've been routing my donations to the #Harris/Walz campaign through this:
https://secure.actblue.com/donate/mastodon-for-harris
On the theory that it may garner enough attention that pols & campaign officials will start to question whether they *really* still need to be on #xitter.
Possibly just a pipe dream, but I figure it's worth a try. #BeTheChange and all that.