Raw labor cost
The Moral March on Raleigh was a four hour event, not counting commuting, preparation time, setup, and cleanup. It's time for more math again!
Let's again take a low-ball, shot-in-the-dark estimate and say there have been twenty five similarly sized protests each weekend for the last four weekends since the inauguration. Let's also come up with a rough tally for all of the other actions based on some articles from reputable sources. From this Politico article just about the DeVos confirmation, we can tally up approximately 85,000 calls, emails, and letters targeted at just five senators out of 100.
Let's also assume each contact takes one minute on average including the time waiting for a staffer to pick up the phone. Also, since these actions can be taken from home maybe they only get $5 per hour. Finally, the Politico article was written on January 26th. A more recent CNN article indicates that as many as 1.5 million calls per day have been coming in to the Senate, which approximately matches our number above. Go us! There have been 24 days since the inauguration. Hey look, it's more math.