Anyone guess what I used for the main building?
link
Anyway, it's cut into, to make the doors and windows. Perspex from a meat package for the glass which is super-glued on the inside with paper divisions and a card frame. The glass plates should probably have been smaller for that era. Door and frame made of card with details made from plastic packaging.
The roof is supposed to be made of sticks, so I used thin card fitted and scraped with a Stanley knife and held it on with super-glue and PVA.
The sails are paper held to two wooden kebab-skewer frames by tea-bag string. The external lever is also a kebab-skewer. The tiled roof of the spindle housing is the only commercially-made material, being "Pantiles" sold by Will's Kits (item SSMP206), held up with card and PVA.
The old mill-stone is a metal washer backed with card. Its weight keeps the mill being knocked over. The white-washing is polyfiller, a type of liquid plaster put on with a pallet-knife. The blue paint (again, probably stretching resources for the time) is acrylic – all of it then covered with PVA to keep it from falling off!