https://crowdbucks.org/ — this is a FLO project that aims to ease donating to others based on Fediverse accounts (starting with Mastodon). It uses Stripe, and it is itself meant to be federated and self-hostable.
I don’t see evidence yet of it being usable, so not sure about adding it to the wiki at Snowdrift Wiki - Other Crowdfunding / Fundraising Services
I also don’t see how this will work legally. Stripe doesn’t let just anyone make a personal account and get money from whoever, and CrowdBucks can’t legally just support any person or project for anything.