I took every water holding, freezable receptacle I could find this afternoon and half filled them all with water and chucked them in the deep freeze.
I've currently got a frozen 2l bottle at my feet, an icy cold 'hot water bottle' under my pillow and a icy bottle of water for sipping on the bedside table.
There's another frozen 2l bottle of water in each child's room for them to cuddle/drink/waft around as they please.
It's just wonderful
.