1. Universal voter ID for universal vote-by-mail: Republicans could offer to accept some of Democrats' proposals for universal vote-by-mail, early voting, etc. as a nationwide standard -- if Democrats also accepted universal voter ID, either through photo ID or some other unique personal identification number.

2. A border wall for DACA: Democrats would agree to fund the border wall, in return for Republicans agreeing to give permanent legal residency to anyone brought into the U.S. as a minor before a certain date (it would have to be prior to this administration, though, since Biden is bringing in any and all comers).

3. Permanent residency in exchange for no vote: Republicans could agree to give permanent leal residency to the millions of illegal aliens in the country, on the condition that anyone who willingly entered the country illegally is never able to exercise the right to vote, ever. You can stay/work but you can't govern.

4. A carbon tax in exchange for the elimination of payroll taxes: Republicans could agree to a tax on carbon -- i.e. on the use of fossil fuels for energy of all kinds -- if Democrats agree to drop the payroll tax, which is a tax on work. Discourage waste instead of work. Encourage efficiency, reduce emissions.

5. Reparations in exchange for an end to affirmative action: I'm just playing with the idea here, but what if Congress agreed to some form of reparations payout, no questions asked, on condition that affirmative action be barred by an amendment to the Constitution, much like California's Proposition 209?

There are a lot of these. They don't get done because part of the business of politics as a career is making sure there are still disputes to fight about.