A few things that are accessible within the USA include:
- Participating in mutual aid programs
- Campaigning on the local level, including for positions like poll watchers
- Making your voice heard in community events in general
- Joining your local DSA, networking
Unironically, this is a pretty good book. The “don’t vote” crowd would hate it if they could read too.
https://en.wikipedia.org/wiki/Friendly_Fascism_(book)