This is a holder for the battery compartment of these LED fairy lights. 

We have these light for different occasions like Halloween, eastern or Christmas, and because we didn't want to make a permanent attachment of the battery compartment to the door, I decided to create this holder. The holder now sticks to the door with a power strip, so that we can just switch the complete fairy light by simply switching the battery compartment in the holder. 

The holder can easily be attached to any plain surface and the compartment is safe from sliding out of the holder because of the walls. The lower wall is where the cable is coming out of the compartment, and there should even be enough space to operate the lights switch without removing the compartment from the holder.