Why are you set on going to another big city? While the odds of anywhere being normal for travel this summer are low, the more rural the area, the more normal it will likely seem.
If it were me - and it likely will, I am stir crazy too - I'd look for an open jaw ticket between two cities that have a scenic drive between them and then plan a road trip. I'm finding that getting in my car and driving around is one of the best releases from monotony available right now.