Yes! You can make potato salad from a mix. Try this recipe that blends the creamy au gratin potato sauce with mayonnaise and mustard.
If you are taking this to a picnic, keep it cold. Serve the salad in a bowl that can be nested in a large bowl filled with ice.
For "egg-straordinary" potato salad, stir in 4 chopped, hard-cooked eggs with the ham and peas.