Several offcuts of "Backer board" insulation - foam with a cement based cover to make it waterproof. 25mm thick. Some bits are part painted, as I used this to insulate my office ready for winter...
Part used tin of foam adhesive. I didn't use much of it, but I don't know how much is in one of these to start with.
Half a bag of cement. Been open a few weeks, but kept wrapped in a plastic bag.