My kids LOVE superheroes, and I think that they are in the majority there. I just know they would go daft for this Marvel 3D Ironman LED Light at Amazon. It's a really good price at the moment... just £23.07 with FREE delivery too.
The Marvel 3D Ironman 3D LED Light is a great Night Light for any little or older one. It comes with a wall sticker to give the illusion that it has burst through the wall.
The bulbs never need changing and it's battery operated. It has a brighter light function too.
To use it is very simple, there's one switch to turn it on and off. This Night Light stays cool too, which takes out the worry of younger ones burning themselves.