The area right around the convention center is fairly touristy but a nice stroll along the waterfront, wander around the pedestrian Promenade.
You can take the light rail Blue Line into downtown. Tons of stuff to do there.
And you could actually switch lines to visit Hollywood or Santa Monica.
Santa Monica has some great shops along Main Street south of the 10, but you may want to uber from the light rail to there, as it is a mile or so to that area.
Just a couple low cost options.