Richelle's creative night light solution:
When my 3 year-old son was afraid of having bad dreams one night, I gave him a couple glow stick bracelets left over from Halloween. They made a great night light for him. I was thinking they would work especially well for traveling or camping, when plugging in a regular night light wouldn't work.
A word of caution: I'd only do this for older kids who won't put the bracelet in their mouths.
PS. According to another hack, glow sticks last longer when stored in Ziploc bags!
More: Easy Halloween tips