Steampunk Dollhouse Electricity

As it's my first house I have chosen a simple solution to add light into my house: a battery box! And what could be a better way than to hide the cables inside the chimney?

But somehow I have to hide that ugly battery box and therefore I will disguise and camouflage it as a steam engine. One of my lamps is red and that will go into a fireplace. The two others are white and will be added to upcoming lights. The chimney itself will be covered with bricks.

Here's one of my ideas, of course I will paint the Lego wheels before add them.