There's a big outlet mall in Cabazon that's pretty good and next to it there's a place called Hadley's that is sort of an interesting stop. It's a little store and they specialize in dates and other dried fruit but they also have nuts, trail mixes, candy, bread, chips, sodas. I think it's more interesting than it sounds when I'm describing it. There's the Living Desert Zoo which I think is in Palm Desert (?). If you're intersted in going to a casino there's Casino Morongo right there too.
Have a fun trip!