Literally just go outside and write ACAB on something. Dumpster dive something. Slack off at work. Map your neighborhood's security cameras. Delete your Instagram. Write a political prisoner. Start a garden. Drop acid. Give a homeless lady some hand-warmers. Put "out of service" signs on parking meters. Pick one and do it right now.
These aren't revolutionary acts, these are the calisthenics you do so you'll be in shape for the revolution.
Yeah this was my first thought. You could always actually make it out of order, but now your vandalizing government property and are taking a a significantly bigger risk for something that is ultimately pretty petty