One of my absolute personal favorite succulents, Hawarthia fasciata, sometimes called Zebra Plant, is an easy to grow and hard to kill succulent that does well as a houseplant due to the fact that it can tolerate lower light levels than most succulents. Add to all of this the fact that Hawarthia fasciata is non-toxic and safe for pets, you've got a 10/10 houseplant!
For best results place in a bright spot away from scorching hot sun and water sparingly.