one of my favorite playgrounds
You have a 4x4 vehicle, right?
A perfect place is Racetrack Playa with it's moving rocks. 2-4 hours drive on a really nasty dirt road, it kills a lot of tires, so you must drive really carefully.
But the Playa and the rocks are so awesome!! Especially for sunset. There is a primitive camp nearby, Homestake drycamp, cool location.
I'm still working a TR of my 5 day trip last year.
A must see is Zabriskie Point for sunset, Mesquite Flats dunes for sunset or sunrise. Both is working fine.
Then Badwater Basin. Don't park at the big parking lot, drive for another quarter of a mile and park beside the road. Then walk out to the salt flats. There a re wonderful patterns of salt and lots of the residues are piling up in weird pattern. Great fur sunset or sunrise.
Nearby is Artist Drive and Artist Palette, a wonderful and extremely colorful area. You can walk around a little bit, there a re lots of pullouts on that drive.
What about a few hikes?
I did Wildrose Peak last year. Nice shot hike with an elevation gain of around 2200 feet. There is a wonderful campground at the trailhead. The hike is 8.4 miles long. Nearby Telescope Peak is also an option, but in March there often is still a lot of snow left and you might need crampons for that one.
Another great hike is Mosaic Canyon and also Marble Canyon.
Then there is Golden Canyon, a short hike, but really beautiful in late afternoon.
I also like some of the dirt roads in the park. Titus Canyon Road is really nice. Wonderful geological features, some old stuff from former mines left to explore.
Eureka Dunes, the highest dunes in the park. You can camp at the base of the dunes.
And a lot of old mines to explore like Skidoo, Eureka Mine.