The Twilight Turtle is a wonderful variation on a nightlight, as instead of just being a simple light, it's a stuffed turtle (w/ a hard plastic shell so not for cuddling) that projects mostly accurate star maps on your ceiling for about 40 minutes at a time (so not a battery eater). There are 3 different colored lights so you can switch it up and it's easy to use so your children can reactivate it if they wake up in the night. Kids can used the included star map to find the constellations so it's not just for little kids. You could use it from birth to age 10 if you wanted. There are other variations (like the ladybug or sea turtle) that have other features as well.