Disabled people have been relying on each for a long, long time. In the chronic illness spaces, all we have is each other huddling against a largely hostile world. It is true mutual aid, bi- and omnidirectional, not just one-way requests for donations (which is fine but I don't consider that mutual aid because what part of it is mutual?).
Example from @meactnet is the Canary Corps. https://www.meaction.net/canary-corps/
Learn from us.