The points are operated by a 12v HDD power supply from eBay for about £7, the signal box is marine ply, the windows are all plasticard, the stones at the bottom are a modelling clay that was pressed onto the ply and the stones were scored into it with a sharpened lolly pop stick, simple but quite effective. Painted with acrylics and then heavily varnished a few times. The lid is hinged and the box has survived all winter without any rain getting in.
I should point out that the steps to the door which you can't see have yet to be built


The picture below gives a representation of my layout and the switches are placed appropriately to where the points are.


