Long story short: tell your Congressfolk to pass the Social Security 2100 Act, the Women's Health Protection Act, the Fourth Amendment is Not for Sale Act, the People's Response Act, and the Break Free From Plastic Pollution Act. Use the tools in the upper right-hand corner of this page (or, if you're on a cellphone, the bottom of this page) to find your Congressfolk's phone numbers and/or use the email/petition tools in the following paragraphs.
Social Security Works helps you tell your Congressfolk to pass H.R. 5723, the Social Security 2100 Act. The Social Security 2100 Act would increase both benefits and revenues, the latter by, as they say, scrapping the cap on the income that can be taxed into Social Security, at least for income over $400,000. Why there should be a donut hole on income between $142,800 (the current cap) and $400,000 annually I couldn't tell you, but taxing income over $400,000 represents progress, and we shouldn't let the perfect murder the good. Let's not let Democratic cowardice ("there's an election coming up -- scary, kids!") murder the good, either, but improving Social Security would be both good and popular, and really, everyone should get behind it. Even Republicans!
The ACLU helps you tell your Senators to pass H.R. 3755/S. 1975, the Women's Health Protection Act, which would essentially codify the protections of Roe v. Wade into federal law. And with our Supreme Court apparently willing to bless Mississippi's 15-week abortion ban in Dobbs v. Jackson Women's Health Organization, putting Roe v. Wade into law would be a good and necessary thing! One thing I rarely hear about this topic is that outlawing abortion wouldn't be like outlawing burglary -- anyone can commit a burglary, while only a woman can have an abortion, and ain't no right-wing legislators willing to penalize men for the ill-considered sex that prompted the abortion. I suspect they would enshrine ill-considered sex a Constitutional right, at least for men. But they shouldn't get all the say about everything.
The Center for Rights and Dissent helps you tell your Congressfolk to pass H.R. 2738/S. 1265, the Fourth Amendment is Not for Sale Act. Big data mining corporations are harvesting your internet surfing habits as we speak! And worse than that, those same big data mining corporations will eagerly sell your internet surfing habits to law enforcement! And law enforcement should only be able to get that information with a warrant, which means they think they have a better than 50-50 chance of convicting you of something. The Fourth Amendment is Not for Sale Act would prevent big data corporations from selling your personal info willy-nilly to law enforcement. Your internet service-providing corporations can't do it under the law, and neither should these data harvesters. Also, they should get a real job doing real work.
Daily Kos helps you tell your Congressfolk to pass H.R. 4194, the People's Response Act. I could be wrong about this, but I've long thought "defund the police" a bad slogan describing good ideas -- that we shouldn't turn to our police to solve every conceivable problem, nor should we blithely assume we can simply retrain police to be every other kind of worker we need (the way some folks blithely assume that "just learn to code" is a solution to every economic problem). The People's Response Act would fund better solutions to community problems at the state and local level, so that we don't send in a guy with a gun whenever someone has a problem, because sooner or later, as we have long known, that's going to get someone killed. And whatever else you want from your government, it shouldn't kill you.
Finally, Daily Kos also helps you tell your Congressfolk to pass H.R. 2238/S. 984, the Break Free From Plastic Pollution Act, which would, among other things, make big corporations more responsible for their plastic waste, start a national refund program for beverage containers, and set minimum recycled-content standards for products. When all the haters respond by saying but we need plastic for things you stupid liberal ha ha ha snort high five!, you can take comfort in knowing that "breaking free from plastic pollution" is not actually the same thing as "never make anything with plastic again." You might even point it out to them! It won't change their minds, because they're haters, but it might change the minds of other folks who might be listening.