The largest single-day protest in U.S history has just taken place. Estimates are that one out of every 100 Americans took to the streets to march on Saturday in at least 500 cities across the United States.

As lives return to normal for those who participated, the question of what to do next rings loudly. Emmett Pickerel, one of the island masterminds who helped transport more than 300 islanders to the Seattle march, noted that point himself. He said he hoped many saw Saturday not as a great day, but a great first day.

A simple Google search of what to do next offers a multitude of options and action plans. If you are feeling adrift, read them. Dream big. Then make some concrete plans.

You don’t have to go far to begin to make a difference. Supreme Court Justice Mary Yu spoke on the island last week, and ahead of her speech, she addressed the importance of acting locally.

“We are best and most effective when we act where we are planted: our workplace, homes and communities,” she said.

If you are planted near a computer, as many of us are much too often, go online and do research. Reach out. Take risks, and be willing to go through some trial and error.

Longtime island activist Emma Amiad recommends political action. Consider running for office. Or failing that, become politically active to support the party and people of your choice. She also suggests volunteering for service organizations on Vashon, helping to keep islanders safe and healthy against potential federal cuts.

If those options are not the right fit, the island also has grassroots groups working on a range of issues, including bringing refugees to Vashon and taking action on climate change.

If long-established organizations sound better, ask to be invited to Vashon Rotary, which focuses on local and international projects in health and sanitation, peace, community and economic development, and all forms of human well-being.

At Vashon Youth & Family Services, Executive Director Kathleen Johnson offered some advice for post-march volunteers: Do something that fuels your spirit. Not every volunteer position will feel instantly rewarding, but supporting a larger goal has its own benefits. She recounted how when she was a little girl, her mother ran a mimeograph machine in the basement for the League of Women voters. It was not glamorous work, but it was important work — and the kind of work agencies often need volunteers to do.

One islander, buoyed by the march on Saturday, stressed the importance of staying involved: “Keep your pussyhats ready,” he said. “We are going to need them a lot in the next four years.”