About 60 miles west of La Paz across the desert is the town of Todos Santos. It is a cute little artist's colony with a fair number of American expats on the Pacific coast. It is much cooler than La Paz, about 10 F on any given day. It has some touristy trinket stands and a few nice restaurants and a cute little church. The beach north of there is deserted and open for a relaxing day of nothingness.
It is home of the famous Hotel California, supposedly where the song was inspired (more likely not). A pleasant day away from La Paz or Los Cabos, well worth the trip.
Isla Cerralvo - Isla Espiritu Santo
Drive out of town to the north and the east, either will do. At the end of the road, there is the deepest blue water separating you from a gorgeous deserted island. The beach has a few palapas and a bar, but is otherwise all for yourself. Stop, look for shells, crack open a beverage of your choice, and realize that there is beauty in this old world.
The most exciting activity to do is snorkeling, with secluded beaches and crystal clear waters where you can swim with the sea lions and see tropical fish. There are beautiful beaches close to town but not always as much underwater wildlife.